Simple Template Engine Brighton and Hove city

Templates: Templates are files or strings that include placeholders or template tags representing dynamic content.

• Example: In an HTML template, {{ username }} might be a placeholder for the actual username.

Template Tags:Template tags are markers within templates that indicate where dynamic content should be inserted.

• Example: In a template engine like Jinja (used with Flask), {{ ... }} is a common syntax for template tags.

Data Binding:Template engines bind data to template variables, replacing placeholders with actual values.

• Example: If username is passed as data, {{ username }} in the template will be replaced with the actual username.

Conditional Statements:Template engines often support conditional statements to control the rendering of content based on data.

• Example: {% if is_authenticated %}Welcome, {{ username }}!{% endif %}

Inclusion of Other Templates:Templates can include or extend other templates, allowing for code reuse and modular design.

• Example: {% include 'header.html' %}

Filtering and Formatting;: Template engines often provide filters or formatting options to modify the presentation of data.

• Example: {{ timestamp | format_date }}

Commenting:

:Comments allow developers to add explanatory notes directly within the template code.

• Example: {# This is a comment #}

Error Handling:: Template engines may include error handling mechanisms to handle cases where template variables are missing or have unexpected types.

• Example: Displaying a default value if a variable is not defined: {{ username | default('Guest') }}

Extensibility:Simple template engines are often designed to be extensible, allowing developers to define custom filters, functions, or syntax.

• Example: Adding a custom filter for uppercase text: {{ text | uppercase }}

Whitespace Control: Some template engines offer features to control whitespace in the rendered output for better readability.

• Example: {%- ... -%} for trimming leading and trailing whitespace

Extensibility:

Simple template engines are often designed to be extensible, allowing developers to define custom filters, functions, or syntax.

• Example: Adding a custom filter for uppercase text: {{ text | uppercase }}

Error Handling:

Template engines may include error handling mechanisms to handle cases where template variables are missing or have unexpected types.

• Example: Displaying a default value if a variable is not defined: {{ username | default('Guest') }}

Commenting:Comments allow developers to add explanatory notes directly within the template code.

• Example: {# This is a comment #}

Template Inheritance:Template inheritance allows the creation of a base template with placeholders that can be overridden in child templates, promoting a consistent layout.

• Example: {% extends 'base.html' %}

Escaping;

: To prevent security vulnerabilities like Cross-Site Scripting (XSS), template engines typically include automatic escaping of user-generated content.

• Example: {{ user_input | escape }}

Iteration (Loops):Template engines allow for the iteration over lists or arrays, repeating a block of content for each item.

• Example: {% for item in items %}{{ item.name }}{% endfor %}