Flask

1. Flask: A Beginner's Guide to Python Web Development

Introduction

Flask is a micro web framework written in Python. It's classified as a microframework because it doesn’t require particular tools or libraries for you to start. It allows you to build web applications without the complexities often associated with larger, more comprehensive frameworks like Django. This makes Flask an excellent choice for beginners learning web development, as well as experienced developers who want a lightweight and flexible solution for smaller to medium-sized projects. This article will serve as a comprehensive introduction to Flask, covering its core concepts, installation, basic usage, routing, templates, forms, database integration, and more. Understanding these concepts will allow you to build dynamic web applications efficiently. We'll also briefly touch upon how Flask integrates with concepts relevant to financial data analysis, which can be useful in building web applications displaying Technical Analysis results.

Why Choose Flask?

Several factors make Flask a popular choice for web development:

• **Simplicity:** Flask's minimalist design reduces the learning curve, making it easier for beginners to get started.
• **Flexibility:** It doesn’t impose many restrictions on how you structure your application, giving you more control over your project.
• **Extensibility:** Flask provides a robust extension system that allows you to add features as needed without bloating the core framework. You can find extensions for everything from database integration to authentication.
• **Lightweight:** Its small size and minimal dependencies result in faster development and deployment times.
• **Large Community:** A vibrant and active community provides ample support, documentation, and third-party libraries.
• **WSGI Compliance:** Flask is a WSGI (Web Server Gateway Interface) compliant framework, meaning it can work with various web servers.

Installation

Before you can start using Flask, you need to install it. The recommended method is using `pip`, Python's package installer. Open your terminal or command prompt and run the following command:

```bash pip install flask ```

This will download and install Flask and its dependencies. It's highly recommended to use a Virtual Environment to isolate your project’s dependencies and avoid conflicts with other Python projects. You can create a virtual environment using the following commands:

```bash python3 -m venv venv source venv/bin/activate # On Linux/macOS venv\Scripts\activate # On Windows ```

Once the virtual environment is activated, install Flask as described above.

Your First Flask Application

Let's create a simple "Hello, World!" application to demonstrate the basic structure of a Flask application. Create a new file named `app.py` (or any other name you prefer) and add the following code:

```python from flask import Flask

app = Flask(__name__)

@app.route("/") def hello_world():

return "

Hello, World!

"

if __name__ == '__main__':

   app.run(debug=True)

```

Let's break down this code:

• `from flask import Flask`: This line imports the `Flask` class from the `flask` module.
• `app = Flask(__name__)`: This creates an instance of the `Flask` class. The `__name__` argument is a special Python variable that represents the name of the current module.
• `@app.route("/")`: This is a decorator that associates the `/` URL route with the `hello_world` function. When a user visits the root URL of your application, the `hello_world` function will be executed. This is the foundation of Routing.
• `def hello_world():`: This defines a function named `hello_world` that returns the string "

  Hello, World!

  ". This string will be displayed in the user's browser.
• `if __name__ == '__main__':`: This ensures that the `app.run()` method is only called when the script is executed directly (not when it's imported as a module).
• `app.run(debug=True)`: This starts the Flask development server. The `debug=True` argument enables debug mode, which provides helpful error messages and automatically reloads the server when you make changes to your code.

To run the application, open your terminal, navigate to the directory where you saved `app.py`, and run the following command:

```bash python app.py ```

You should see output indicating that the Flask development server is running. Open your web browser and navigate to `http://127.0.0.1:5000/`. You should see the "Hello, World!" message displayed in your browser.

Routing

Routing is the process of mapping URLs to specific functions in your application. Flask uses the `@app.route()` decorator to define routes. You can define routes for different URLs and HTTP methods (e.g., GET, POST).

• **Static Routes:** These routes match a specific URL exactly.

   ```python
   @app.route("/about")
   def about():

return "

About Us

"

   ```

• **Dynamic Routes:** These routes can include variables in the URL. You can use angle brackets `<>` to define variables.

   ```python
   @app.route("/user/<username>")
   def show_user_profile(username):
       return f"User: {username}"
   ```

   In this example, `<username>` is a variable that will capture the value from the URL. For example, if a user visits `/user/john`, the `show_user_profile` function will be called with `username` set to "john".

• **Route Converters:** Flask provides route converters to specify the type of data that should be captured in a variable.

   *   `int`:  Matches integers.
   *   `float`: Matches floating-point numbers.
   *   `string`: Matches strings (default).
   *   `path`: Matches any path segment.

   ```python
   @app.route("/post/<int:post_id>")
   def show_post(post_id):
       return f"Post ID: {post_id}"
   ```

• **HTTP Methods:** You can specify which HTTP methods a route should respond to using the `methods` argument.

   ```python
   @app.route("/login", methods=['GET', 'POST'])
   def login():
       if request.method == 'POST':
           # Handle login form submission
           return "Login submitted"
       else:
           # Display login form
           return "Login form"
   ```

Templates

Templates allow you to separate your application's logic from its presentation. Flask uses the Jinja2 template engine, which provides a powerful and flexible way to generate dynamic HTML.

First, create a `templates` folder in the same directory as your `app.py` file. Flask automatically looks for templates in this folder.

Create a file named `index.html` inside the `templates` folder with the following content:

```html <!DOCTYPE html> <html> <head>

   <title>Flask Template Example</title>

</head> <body>

Hello,

1. Template:Name

Template:Name is a fundamental building block in MediaWiki, allowing you to create reusable content snippets that can be dynamically inserted into multiple pages. This article will provide a comprehensive guide for beginners on understanding, creating, and using templates, specifically focusing on the core concepts applicable to MediaWiki 1.40 and beyond. We'll cover everything from basic syntax to more advanced techniques, including parameters, default values, conditional statements, and common pitfalls to avoid. This will empower you to streamline content creation, ensure consistency across your wiki, and enhance the overall maintainability of your site. The concepts detailed here are crucial for anyone looking to contribute significantly to a MediaWiki-based platform, especially those involved in topics like Technical Analysis, Trading Strategies, and Market Trends.

What are Templates?

Imagine you frequently need to include the same information on multiple pages – perhaps a standard disclaimer, a navigation box, or a formatted table of Financial Ratios. Manually copying and pasting this information is time-consuming and prone to errors. Templates solve this problem.

A template is essentially a page that contains content designed to be *transcluded* – that is, inserted into other pages without actually moving the template's content. When a template is transcluded, the receiving page displays the template’s content as if it were directly written there. However, any changes made to the template are automatically reflected on all pages where it is used.

This is incredibly powerful for maintaining consistency and simplifying updates. For instance, if a legal disclaimer changes, you only need to edit the template once, and the change will propagate to every page that includes it. This is particularly useful for rapidly changing information like Volatility Indicators or Economic Calendars.

Basic Template Syntax

Templates reside in the Template: namespace. To create a template, simply create a new page starting with "Template:". For example, to create a template named "Example", you would create a page titled "Template:Example".

The core of template syntax revolves around the `Template:...` construct. This is how you *call* or *invoke* a template on a page. Within the double curly braces, you specify the template name.

For example, if you created a template named "Template:Greeting" with the following content:

```wiki Hello, Wiki User! Welcome to our wiki. ```

You would include this greeting on another page by writing:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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This would render as:

Hello, Wiki User! Welcome to our wiki.

Parameters: Making Templates Dynamic

The real power of templates comes from their ability to accept *parameters*. Parameters allow you to pass data to the template, making its output dynamic and adaptable to different situations. Parameters are specified within the template call, separated by an equals sign (=).

Let's modify our "Greeting" template to accept a name as a parameter:

```wiki Hello, {{{1}}}! Welcome to our wiki. ```

Now, when you call the template, you can specify the name:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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This would render as:

Hello, John! Welcome to our wiki.

• `{{{1}}}` represents the first parameter passed to the template.
• `{{{2}}}` would represent the second parameter, and so on.
• You can use named parameters for better readability (explained later).

This concept is vital for templates used in Forex Trading, where parameters can represent currency pairs, timeframes, or indicator settings.

Named Parameters

While numbered parameters work, they can be difficult to remember and maintain, especially for templates with many parameters. Named parameters offer a more descriptive and organized approach.

To define a named parameter, use the `{{{name=default value}}}` syntax. For example:

```wiki Hello, Wiki User! Your favorite color is blue. ```

In this example:

• `name` is a named parameter. If no value is provided when the template is called, it defaults to "Wiki User".
• `color` is another named parameter with a default value of "blue".

Calling the template like this:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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Subscribe to our Telegram channel @strategybin to receive: ✓ Daily trading signals ✓ Exclusive strategy analysis ✓ Market trend alerts ✓ Educational materials for beginners ```

would render as:

Hello, Alice! Your favorite color is green.

Calling it simply as:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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Subscribe to our Telegram channel @strategybin to receive: ✓ Daily trading signals ✓ Exclusive strategy analysis ✓ Market trend alerts ✓ Educational materials for beginners ```

would render as:

Hello, Wiki User! Your favorite color is blue.

Named parameters are particularly useful for complex templates, such as those used to display Candlestick Patterns or Chart Patterns, where you need to specify multiple attributes.

Default Values

As demonstrated in the named parameter example, providing default values is crucial. It ensures that the template functions correctly even when a parameter is not explicitly provided. Default values make your templates more robust and user-friendly. Always consider what a reasonable default value would be for each parameter. In the context of Trading Psychology, a default value could represent a conservative risk tolerance.

Conditional Statements

Templates can also incorporate basic conditional logic using the `#if` parser function. This allows you to display different content based on the value of a parameter.

The syntax is as follows:

```wiki

1. if:{{{condition}}}|

 Content to display if the condition is true.

1. else|

 Content to display if the condition is false.

1. endif

```

For example, let's create a template that displays a warning message if a stock price is below a certain threshold:

```wiki

1. if:{Template:Price<50}|

 Warning: The stock price is below $50.

1. else|

 The stock price is currently $ {{{price}}}.

1. endif

```

Calling the template with `Template:StockPrice` would render:

Warning: The stock price is below $50.

Calling it with `Template:StockPrice` would render:

The stock price is currently $ 60.

Conditional statements are extremely valuable for templates that need to adapt to changing market conditions or user preferences, such as templates displaying Support and Resistance Levels.

Template Loops with #loop

For more complex scenarios, you can use the `#loop` parser function to iterate over a list of items. This is particularly useful for creating tables or lists dynamically. The `#loop` function requires a bit more understanding and is beyond the scope of a basic beginner guide, but it’s essential for advanced template creation. It’s often used for displaying data from Fundamental Analysis.

Common Pitfalls and Best Practices

• **Category Usage:** Always categorize your templates using the `` category (or a more specific subcategory).
• **Documentation:** Document your templates! Explain what they do, what parameters they accept, and how to use them. Use the `/doc` subpage for documentation (e.g., `Template:Example/doc`).
• **Testing:** Thoroughly test your templates before deploying them to ensure they work as expected.
• **Avoid Excessive Complexity:** Keep your templates as simple as possible. Complex templates can be difficult to maintain and debug. Consider breaking down complex logic into multiple smaller templates.
• **Use Named Parameters:** Favor named parameters over numbered parameters for improved readability and maintainability.
• **Use Default Values:** Always provide default values for parameters to make your templates more robust.
• **Avoid Direct Editing of Templates on Live Pages:** Always test changes in a sandbox environment before applying them to live pages.
• **Consider Transclusion Cost:** Extensive use of complex templates can impact page loading times. Optimize your templates for performance. This is important when dealing with pages displaying real-time Tick Data.
• **Be Mindful of Recursion:** Avoid creating templates that call themselves directly or indirectly, as this can lead to infinite loops.

Advanced Techniques (Brief Overview)

• **TemplateData:** TemplateData is a JSON-based format that defines the parameters and documentation for a template, enabling better editor support.
• **Modules:** Lua modules allow you to write more complex template logic and perform calculations that are not possible with the standard parser functions.
• **Parser Hooks:** Parser hooks allow you to extend the MediaWiki parser with custom functions.

These advanced techniques are beyond the scope of this introductory article but are worth exploring as you become more proficient with templates. They are often used for creating highly customized templates for specific applications, like Algorithmic Trading platforms.

Template:Name – A Specific Example

Let's create a simple "Name" template to demonstrate the concepts discussed. This template will display a user's name in a formatted manner.

Create a page titled "Template:Name" with the following content:

```wiki

Usage

This template displays a user's name in bold.

Syntax:

Example:

Template

Anonymous ```

Now, on any page, you can use the template like this:

```wiki My name is: ```

This will render as:

My name is: Bob

If you call the template without a name:

```wiki My name is: ```

It will render as:

My name is: Anonymous

This simple example illustrates the core principles of template creation and usage. You can expand upon this basic template to create more complex and sophisticated content snippets. This template, while simple, demonstrates the foundational principles applicable to more complex templates used for displaying Fibonacci Retracements or MACD Indicators.

Further Resources

• Help:Templates
• Help:TemplateData
• Help:Lua scripting
• MediaWiki Developer Documentation
• Wikipedia's Template Article
• Tutorialspoint MediaWiki Templates

This article provides a solid foundation for understanding and using templates in MediaWiki. By practicing and experimenting with the concepts discussed, you'll be well on your way to mastering this powerful feature and contributing effectively to your wiki. Remember to always refer to the official MediaWiki documentation for the most up-to-date information. Templates are essential for maintaining a consistent and organized wiki, especially when dealing with dynamic information related to Day Trading, Swing Trading, and Long-Term Investing.

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Current date and time: Template:Current datetime

</body> </html> ```

Now, modify your `app.py` file to render this template:

```python from flask import Flask, render_template import datetime

app = Flask(__name__)

@app.route("/") def index():

   name = "World"
   current_datetime = datetime.datetime.now()
   return render_template("index.html", name=name, current_datetime=current_datetime)

if __name__ == '__main__':

   app.run(debug=True)

```

In this example:

• `from flask import render_template`: This imports the `render_template` function.
• `render_template("index.html", name=name, current_datetime=current_datetime)`: This renders the `index.html` template and passes the `name` and `current_datetime` variables to the template.
• In the `index.html` template, `

1. Template:Name

Template:Name is a fundamental building block in MediaWiki, allowing you to create reusable content snippets that can be dynamically inserted into multiple pages. This article will provide a comprehensive guide for beginners on understanding, creating, and using templates, specifically focusing on the core concepts applicable to MediaWiki 1.40 and beyond. We'll cover everything from basic syntax to more advanced techniques, including parameters, default values, conditional statements, and common pitfalls to avoid. This will empower you to streamline content creation, ensure consistency across your wiki, and enhance the overall maintainability of your site. The concepts detailed here are crucial for anyone looking to contribute significantly to a MediaWiki-based platform, especially those involved in topics like Technical Analysis, Trading Strategies, and Market Trends.

What are Templates?

Imagine you frequently need to include the same information on multiple pages – perhaps a standard disclaimer, a navigation box, or a formatted table of Financial Ratios. Manually copying and pasting this information is time-consuming and prone to errors. Templates solve this problem.

A template is essentially a page that contains content designed to be *transcluded* – that is, inserted into other pages without actually moving the template's content. When a template is transcluded, the receiving page displays the template’s content as if it were directly written there. However, any changes made to the template are automatically reflected on all pages where it is used.

This is incredibly powerful for maintaining consistency and simplifying updates. For instance, if a legal disclaimer changes, you only need to edit the template once, and the change will propagate to every page that includes it. This is particularly useful for rapidly changing information like Volatility Indicators or Economic Calendars.

Basic Template Syntax

Templates reside in the Template: namespace. To create a template, simply create a new page starting with "Template:". For example, to create a template named "Example", you would create a page titled "Template:Example".

The core of template syntax revolves around the `Template:...` construct. This is how you *call* or *invoke* a template on a page. Within the double curly braces, you specify the template name.

For example, if you created a template named "Template:Greeting" with the following content:

```wiki Hello, Wiki User! Welcome to our wiki. ```

You would include this greeting on another page by writing:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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This would render as:

Hello, Wiki User! Welcome to our wiki.

Parameters: Making Templates Dynamic

The real power of templates comes from their ability to accept *parameters*. Parameters allow you to pass data to the template, making its output dynamic and adaptable to different situations. Parameters are specified within the template call, separated by an equals sign (=).

Let's modify our "Greeting" template to accept a name as a parameter:

```wiki Hello, {{{1}}}! Welcome to our wiki. ```

Now, when you call the template, you can specify the name:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

Start Trading Now

Sign up at IQ Option (Minimum deposit $10) Open an account at Pocket Option (Minimum deposit $5)

Join Our Community

Subscribe to our Telegram channel @strategybin to receive: ✓ Daily trading signals ✓ Exclusive strategy analysis ✓ Market trend alerts ✓ Educational materials for beginners ```

This would render as:

Hello, John! Welcome to our wiki.

• `{{{1}}}` represents the first parameter passed to the template.
• `{{{2}}}` would represent the second parameter, and so on.
• You can use named parameters for better readability (explained later).

This concept is vital for templates used in Forex Trading, where parameters can represent currency pairs, timeframes, or indicator settings.

Named Parameters

While numbered parameters work, they can be difficult to remember and maintain, especially for templates with many parameters. Named parameters offer a more descriptive and organized approach.

To define a named parameter, use the `{{{name=default value}}}` syntax. For example:

```wiki Hello, Wiki User! Your favorite color is blue. ```

In this example:

• `name` is a named parameter. If no value is provided when the template is called, it defaults to "Wiki User".
• `color` is another named parameter with a default value of "blue".

Calling the template like this:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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would render as:

Hello, Alice! Your favorite color is green.

Calling it simply as:

```wiki

1. Template:Greeting

Template:Greeting is a fundamental and highly versatile template within the MediaWiki environment, designed to dynamically generate personalized greetings for users. This article provides a comprehensive guide to understanding, utilizing, and customizing this template, catering specifically to beginners. We will cover its core functionality, parameters, usage examples, advanced customization options, troubleshooting common issues, and its role within the broader context of wiki user engagement.

What is a Template?

Before diving into the specifics of Template:Greeting, it’s crucial to understand what a Template is in MediaWiki. Templates are pre-defined sets of wiki markup that can be inserted into pages to consistently display specific content. They act as reusable building blocks, preventing repetitive typing and ensuring uniformity across the wiki. Think of them as functions in programming – you provide certain inputs (parameters), and the template generates a pre-defined output. Using templates promotes efficient content management and a consistent user experience. They are essential for maintaining a professional and organized wiki. Related concepts include Help:Variables and Help:Magic words.

Core Functionality of Template:Greeting

Template:Greeting’s primary purpose is to display a customized greeting message to a user, often incorporating their username. It typically leverages MediaWiki's built-in parser functions to determine the current time and tailor the greeting accordingly (e.g., "Good morning," "Good afternoon," "Good evening"). Beyond a simple greeting, the template can also be extended to display welcome messages, recent activity notifications, or links to helpful resources for new users. It's a crucial element in fostering a welcoming and engaging community environment. Understanding Help:Linking and referencing is key to adding helpful links within the greeting.

Parameters

Template:Greeting utilizes several parameters to control its behavior and output. These parameters are specified when the template is included on a page using the `` syntax. Here's a breakdown of the common parameters:

• `username`: (Optional) The username to greet. If omitted, the template will automatically attempt to determine the current user’s username.
• `greeting`: (Optional) Allows you to override the default greeting message. This can be useful for special occasions or themed greetings.
• `time-format`: (Optional) Specifies the format for displaying the time. Defaults to a 12-hour format. Acceptable values include "12" or "24".
• `show-time`: (Optional) A boolean value (true/false) that determines whether the current time is displayed alongside the greeting. Defaults to "true".
• `custom-message`: (Optional) Allows you to add a completely custom message after the greeting. This parameter is perfect for displaying specific announcements or welcome information.
• `image`: (Optional) Specifies the name of an image to be displayed alongside the greeting. Use standard MediaWiki image syntax (e.g., `File:Example.png`).
• `link`: (Optional) A URL to link from the greeting. Useful for linking to a user's profile or a welcome page.
• `linktext`: (Optional) The text to display for the link specified by the `link` parameter.
• `bgcolor`: (Optional) Sets the background color of the greeting box. Accepts standard HTML color codes (e.g., `#f0f0f0`).
• `textcolor`: (Optional) Sets the text color of the greeting. Accepts standard HTML color codes.

Usage Examples

Here are several examples demonstrating how to use Template:Greeting with different parameters:

1. **Basic Usage (Automatic Username & Default Greeting):**

   ```wiki
   
   ```

   This will display a greeting like "Good morning, [Your Username]!" along with the current time.

2. **Specifying a Username:**

   ```wiki
   
   ```

   This will display "Good morning, ExampleUser!"

3. **Custom Greeting Message:**

   ```wiki
   
   ```

   This will display "Welcome back, [Your Username]!"

4. **Custom Greeting with Time Format:**

   ```wiki
   
   ```

   This will display "Greetings, [Your Username]!" followed by the current time in 24-hour format.

5. **Hiding the Time:**

   ```wiki
   
   ```

   This will display a greeting without the current time.

6. **Adding a Custom Message:**

   ```wiki
   
   ```

   This will display the greeting followed by "Don't forget to check out the Help:Contents!".

7. **Including an Image:**

   ```wiki
   
   ```

   This will display a small Wiki logo next to the greeting.

8. **Adding a Link:**

   ```wiki
   
   ```

   This will display the greeting followed by a link labeled "Visit Example.com" pointing to https://www.example.com.

9. **Customizing Colors:**

   ```wiki
   
   ```

   This will display the greeting in a light blue box with dark blue text.

10. **Combining Parameters:**

   ```wiki
   
   ```

   This demonstrates how to combine multiple parameters for a comprehensive greeting message.

Advanced Customization

While the parameters described above cover most common use cases, Template:Greeting can be further customized by modifying the template’s source code. This requires a basic understanding of MediaWiki markup and parser functions. You can access the template’s source code by clicking the "View source" tab on the Template:Greeting/doc page (or the template itself if documentation doesn't exist).

Here are some advanced customization possibilities:

• **Conditional Greetings:** Use `#if` statements to display different greetings based on user groups (e.g., administrators, registered users, anonymous users). This requires using the `{{#ifeq:Template:USERGROUPS...}}` construct. See Help:Conditional statements for more details.
• **Dynamic Content:** Integrate with other templates or extensions to display dynamic content based on user preferences or recent activity.
• **Custom Time Formats:** Use the `Template:Formattime` parser function to create highly customized time formats. Refer to Help:FormatTime for comprehensive documentation.
• **Error Handling:** Implement error handling to gracefully handle cases where a username is not provided or an image file is missing. Use `#ifexist` to check for file existence.
• **Localization:** Support multiple languages by using the Extension:Translate extension and defining translations for the greeting messages.

Troubleshooting Common Issues

• **Template Not Displaying:** Ensure that the template is correctly included on the page using the `` syntax. Check for typos in the template name.
• **Incorrect Username:** If the template is not displaying the correct username, verify that the user is logged in. If you are specifying a username manually, double-check the spelling.
• **Time Not Displaying Correctly:** Ensure that the server’s time is correctly configured. Verify the `time-format` parameter is set to the desired value ("12" or "24").
• **Image Not Displaying:** Make sure the image file exists in the wiki and that the filename is correct. Verify that the image syntax is correct (e.g., `File:Example.png`).
• **Styling Issues:** If the colors or other styling are not displaying as expected, double-check the HTML color codes and ensure they are valid.

Template Documentation

Every template should have comprehensive documentation. This is typically created on a subpage of the template, such as `Template:Greeting/doc`. The documentation should include:

• A clear description of the template’s purpose.
• A list of all available parameters, with detailed explanations and examples.
• Usage examples demonstrating common use cases.
• Troubleshooting tips for common issues.
• Links to related templates and documentation.

Relationship to Trading and Financial Analysis (for context, as requested)

While seemingly unrelated, the principles behind a well-designed template like Template:Greeting mirror best practices in financial analysis and trading. Just as a template provides a consistent and reliable output based on input parameters, successful trading relies on consistent application of strategies and analysis. Consider these analogies:

• **Parameters as Indicators:** The template’s parameters (username, greeting, time-format) are analogous to technical indicators like Moving Averages, MACD, or RSI. Each parameter modifies the output, just as each indicator provides a different perspective on market data.
• **Template Logic as Trading Strategy:** The logic within the template (determining the greeting based on time) resembles a trading strategy. A defined set of rules (time of day) leads to a specific action (greeting). Similar to a Breakout strategy, the template responds to a specific condition.
• **Customization as Risk Management:** The ability to customize the template reflects the need for risk management in trading. Adjusting parameters allows for tailoring the output to specific circumstances, just as adjusting position size or stop-loss orders manages risk.
• **Consistency as Backtesting:** The consistent output of the template is akin to the need for backtesting in trading. A reliable template ensures predictable results, just as backtesting validates the performance of a trading strategy.
• **Documentation as Trading Journal:** The documentation for the template is like a trading journal. It records the rules, parameters, and expected outcomes, allowing for review and improvement.
• **Market Trends & Template Updates:** Just as market trends change, requiring adjustments to trading strategies (e.g., shifting from a Trend Following to a Mean Reversion approach), templates may need updates to remain relevant and effective.
• **Volatility and Parameter Sensitivity:** The sensitivity of the template's output to parameter changes mirrors the concept of volatility in financial markets. Small changes in input can lead to significant differences in the outcome.
• **Correlation & Parameter Interdependence:** The interaction between different template parameters is similar to correlations between different assets.
• **Support and Resistance Levels & Template Limits:** The limitations of the template (e.g., the types of parameters it accepts) are like support and resistance levels in a market – boundaries that define the range of possible outcomes.
• **Fibonacci Retracements & Template Refinement:** Iteratively refining the template's code and parameters is analogous to using Fibonacci Retracements to identify potential price targets.
• **Elliot Wave Theory & Template Evolution:** The evolution of a template over time, with new features and improvements, can be compared to Elliot Wave Theory, where patterns repeat at different scales.
• **Candlestick Patterns & Template Visualizations:** The visual presentation of the greeting (colors, images) can be considered a form of visualization, similar to how Candlestick patterns provide a visual representation of price action.
• **Bollinger Bands & Template Boundaries:** The parameters of the template define its boundaries, similar to how Bollinger Bands define a range around a moving average.
• **Ichimoku Cloud & Template Conditions:** The conditional logic within the template (e.g., displaying different greetings based on user groups) is analogous to the complex conditions defined by the Ichimoku Cloud.
• **Stochastic Oscillator & Template Momentum:** The dynamic nature of the greeting (changing based on the time of day) can be compared to the momentum indicators like the Stochastic Oscillator.
• **Average True Range (ATR) & Template Variability:** The degree to which the template’s output can vary based on parameter changes is similar to the Average True Range (ATR), which measures market volatility.
• **Donchian Channels & Template Range:** The range of possible outputs from the template, defined by its parameters, can be compared to Donchian Channels, which define a price range over a specific period.
• **Parabolic SAR & Template Acceleration:** The ability to customize the template to respond quickly to changing conditions is analogous to the Parabolic SAR, which accelerates as prices move.
• **Volume Weighted Average Price (VWAP) & Template Importance:** The frequency with which the template is used can be compared to the Volume Weighted Average Price (VWAP), which reflects the importance of price levels based on trading volume.
• **Harmonic Patterns & Template Complexity:** The intricate logic and interdependencies within a highly customized template can be compared to the complexity of Harmonic Patterns.
• **Renko Charts & Template Simplification:** Simplifying the template to focus on essential parameters is analogous to using Renko Charts to filter out noise and focus on significant price movements.
• **Heikin Ashi Charts & Template Smoothing:** Using the template to smooth out variations in the user experience is similar to using Heikin Ashi Charts to smooth out price data.
• **Keltner Channels & Template Volatility:** The template’s responsiveness to changes in user data or system settings is similar to how Keltner Channels adapt to changing market volatility.
• **Pivot Points & Template Key Levels:** The key parameters of the template can be considered pivot points that define its behavior.

See Also

• Help:Templates
• Help:Variables
• Help:Magic words
• Help:Linking and referencing
• Help:Conditional statements
• Help:FormatTime
• Extension:Translate
• Template:Documentation
• MediaWiki syntax
• Help:Contents

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would render as:

Hello, Wiki User! Your favorite color is blue.

Named parameters are particularly useful for complex templates, such as those used to display Candlestick Patterns or Chart Patterns, where you need to specify multiple attributes.

Default Values

As demonstrated in the named parameter example, providing default values is crucial. It ensures that the template functions correctly even when a parameter is not explicitly provided. Default values make your templates more robust and user-friendly. Always consider what a reasonable default value would be for each parameter. In the context of Trading Psychology, a default value could represent a conservative risk tolerance.

Conditional Statements

Templates can also incorporate basic conditional logic using the `#if` parser function. This allows you to display different content based on the value of a parameter.

The syntax is as follows:

```wiki

1. if:{{{condition}}}|

 Content to display if the condition is true.

1. else|

 Content to display if the condition is false.

1. endif

```

For example, let's create a template that displays a warning message if a stock price is below a certain threshold:

```wiki

1. if:{Template:Price<50}|

 Warning: The stock price is below $50.

1. else|

 The stock price is currently $ {{{price}}}.

1. endif

```

Calling the template with `Template:StockPrice` would render:

Warning: The stock price is below $50.

Calling it with `Template:StockPrice` would render:

The stock price is currently $ 60.

Conditional statements are extremely valuable for templates that need to adapt to changing market conditions or user preferences, such as templates displaying Support and Resistance Levels.

Template Loops with #loop

For more complex scenarios, you can use the `#loop` parser function to iterate over a list of items. This is particularly useful for creating tables or lists dynamically. The `#loop` function requires a bit more understanding and is beyond the scope of a basic beginner guide, but it’s essential for advanced template creation. It’s often used for displaying data from Fundamental Analysis.

Common Pitfalls and Best Practices

• **Category Usage:** Always categorize your templates using the `` category (or a more specific subcategory).
• **Documentation:** Document your templates! Explain what they do, what parameters they accept, and how to use them. Use the `/doc` subpage for documentation (e.g., `Template:Example/doc`).
• **Testing:** Thoroughly test your templates before deploying them to ensure they work as expected.
• **Avoid Excessive Complexity:** Keep your templates as simple as possible. Complex templates can be difficult to maintain and debug. Consider breaking down complex logic into multiple smaller templates.
• **Use Named Parameters:** Favor named parameters over numbered parameters for improved readability and maintainability.
• **Use Default Values:** Always provide default values for parameters to make your templates more robust.
• **Avoid Direct Editing of Templates on Live Pages:** Always test changes in a sandbox environment before applying them to live pages.
• **Consider Transclusion Cost:** Extensive use of complex templates can impact page loading times. Optimize your templates for performance. This is important when dealing with pages displaying real-time Tick Data.
• **Be Mindful of Recursion:** Avoid creating templates that call themselves directly or indirectly, as this can lead to infinite loops.

Advanced Techniques (Brief Overview)

• **TemplateData:** TemplateData is a JSON-based format that defines the parameters and documentation for a template, enabling better editor support.
• **Modules:** Lua modules allow you to write more complex template logic and perform calculations that are not possible with the standard parser functions.
• **Parser Hooks:** Parser hooks allow you to extend the MediaWiki parser with custom functions.

These advanced techniques are beyond the scope of this introductory article but are worth exploring as you become more proficient with templates. They are often used for creating highly customized templates for specific applications, like Algorithmic Trading platforms.

Template:Name – A Specific Example

Let's create a simple "Name" template to demonstrate the concepts discussed. This template will display a user's name in a formatted manner.

Create a page titled "Template:Name" with the following content:

```wiki

Usage

This template displays a user's name in bold.

Syntax:

Example:

Template

Anonymous ```

Now, on any page, you can use the template like this:

```wiki My name is: ```

This will render as:

My name is: Bob

If you call the template without a name:

```wiki My name is: ```

It will render as:

My name is: Anonymous

This simple example illustrates the core principles of template creation and usage. You can expand upon this basic template to create more complex and sophisticated content snippets. This template, while simple, demonstrates the foundational principles applicable to more complex templates used for displaying Fibonacci Retracements or MACD Indicators.

Further Resources

• Help:Templates
• Help:TemplateData
• Help:Lua scripting
• MediaWiki Developer Documentation
• Wikipedia's Template Article
• Tutorialspoint MediaWiki Templates

This article provides a solid foundation for understanding and using templates in MediaWiki. By practicing and experimenting with the concepts discussed, you'll be well on your way to mastering this powerful feature and contributing effectively to your wiki. Remember to always refer to the official MediaWiki documentation for the most up-to-date information. Templates are essential for maintaining a consistent and organized wiki, especially when dealing with dynamic information related to Day Trading, Swing Trading, and Long-Term Investing.

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Forms

Forms are used to collect user input. Flask provides several ways to handle forms, including using the WTForms library.

First, install WTForms:

```bash pip install wtforms ```

Create a file named `forms.py` and add the following code:

```python from flask_wtf import FlaskForm from wtforms import StringField, PasswordField, SubmitField from wtforms.validators import DataRequired, Email, EqualTo

class RegistrationForm(FlaskForm):

   username = StringField('Username', validators=[DataRequired()])
   email = StringField('Email', validators=[DataRequired(), Email()])
   password = PasswordField('Password', validators=[DataRequired()])
   confirm_password = PasswordField('Confirm Password', validators=[DataRequired(), EqualTo('password')])
   submit = SubmitField('Register')

```

Now, modify your `app.py` file to use the form:

```python from flask import Flask, render_template, request from forms import RegistrationForm

app = Flask(__name__)

@app.route("/register", methods=['GET', 'POST']) def register():

   form = RegistrationForm()
   if form.validate_on_submit():
       # Process form data
       username = form.username.data
       email = form.email.data
       password = form.password.data
       print(f"Username: {username}, Email: {email}, Password: {password}")
       return "Registration successful!"
   return render_template("register.html", form=form)

if __name__ == '__main__':

   app.run(debug=True)

```

Create a file named `register.html` in the `templates` folder:

```html <!DOCTYPE html> <html> <head>

   <title>Registration Form</title>

</head> <body>

Register

   <form method="POST">
       Template:Form.csrf token
       Template:Form.username.label Template:Form.username

       Template:Form.email.label Template:Form.email

       Template:Form.password.label Template:Form.password

       Template:Form.confirm password.label Template:Form.confirm password

       Template:Form.submit
   </form>

</body> </html> ```

This example demonstrates how to create a simple registration form using WTForms and render it in a template.

Database Integration

Flask can easily integrate with various databases, such as SQLite, MySQL, and PostgreSQL. Flask-SQLAlchemy is a popular extension that provides a convenient way to interact with databases.

First, install Flask-SQLAlchemy:

```bash pip install flask-sqlalchemy ```

Modify your `app.py` file to connect to a database:

```python from flask import Flask from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db' # Use SQLite for simplicity db = SQLAlchemy(app)

class User(db.Model):

   id = db.Column(db.Integer, primary_key=True)
   username = db.Column(db.String(80), unique=True, nullable=False)
   email = db.Column(db.String(120), unique=True, nullable=False)

   def __repr__(self):
       return f'<User {self.username}>'

@app.route('/') def index():

   users = User.query.all()
   return f"Users: {users}"

if __name__ == '__main__':

   with app.app_context():
       db.create_all()  # Create the database tables
   app.run(debug=True)

```

This example demonstrates how to connect to an SQLite database, define a `User` model, and query the database. Remember to create the database tables using `db.create_all()` before using the application.

Sessions and Cookies

Flask provides support for sessions and cookies to maintain user state across multiple requests. Sessions store data on the server, while cookies store data on the client's browser.

```python from flask import Flask, session, redirect, url_for

app = Flask(__name__) app.secret_key = 'super secret key' # Required for session security

@app.route('/') def index():

   if 'username' in session:
       return f'Logged in as {session["username"]}'
   return 'You are not logged in'

@app.route('/login') def login():

   session['username'] = 'John Doe'
   return redirect(url_for('index'))

@app.route('/logout') def logout():

   session.pop('username', None)
   return redirect(url_for('index'))

if __name__ == '__main__':

   app.run(debug=True)

```

This example demonstrates how to use sessions to store and retrieve user information. The `app.secret_key` is crucial for session security.

Deployment

Once your Flask application is developed, you need to deploy it to a production server. Popular deployment options include:

• **Heroku:** A cloud platform that provides a simple and scalable way to deploy web applications.
• **AWS Elastic Beanstalk:** A service that automates the deployment and management of web applications.
• **DigitalOcean:** A cloud infrastructure provider that offers virtual machines and other services.
• **Gunicorn:** A Python WSGI HTTP server that is often used to serve Flask applications in production.
• **uWSGI:** Another popular Python WSGI server.

The deployment process will vary depending on the chosen platform.

Flask and Financial Data

Flask is well-suited for building web applications that display and interact with financial data. You can use Flask to create dashboards showing Candlestick Patterns, Moving Averages, or backtesting results. Integrating with APIs like Alpha Vantage or IEX Cloud allows you to retrieve real-time stock data. The data can then be processed to calculate Bollinger Bands, RSI, or other Indicators. Flask can then be used to visualize this information using libraries like Chart.js or Plotly. Furthermore, Flask can be used to build applications for Algorithmic Trading by providing a web interface for setting parameters and monitoring performance. Consider using libraries like `pandas` for data manipulation and `numpy` for numerical calculations within your Flask application. Understanding Support and Resistance levels and displaying them on a chart is another potential application. Analyzing Price Action and displaying trends is also facilitated by Flask's flexibility in handling and presenting data. Building tools for Trend Following strategies is another viable use case. Flask can also be used to display Fibonacci Retracements. The possibilities are numerous. Remember to handle financial data responsibly and comply with all relevant regulations. Data visualization techniques like Heikin Ashi can also be easily integrated and displayed through a Flask web application. Consider implementing Elliott Wave Theory analysis and visual representation. Understanding MACD and displaying its signals is another practical application. Flask can also be used to build applications for displaying Volume Spread Analysis. Furthermore, applications can be built to analyze Ichimoku Cloud signals. Flask's ability to handle complex calculations and display data dynamically makes it a powerful tool for financial web development. You can also implement Parabolic SAR and display its signals. Consider integrating with APIs providing Sentiment Analysis data. Flask can also be used to display data related to Correlation Analysis. Building a web application to visualize Market Depth is another possibility. Flask can also be used to display data related to Order Flow. Finally, consider building an application to analyze Volatility and display VIX data.

Web Development Python Jinja2 WTForms Flask-SQLAlchemy Virtual Environment Routing Templates Forms Database Integration

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• • Обоснование:**

Flask - это веб-фреймворк на Python, который часто используется для создания веб-приложений и API. В контексте MediaWiki, вероятно, речь идет о шабло]]