Template Tags and Filters

Introduction

Django templates come equipped with a robust system of tags and filters, offering powerful tools to manipulate and display data in a flexible manner. This documentation provides insights into the effective use of template tags and filters.

Template Tags

Looping through Data

{% for item in items %}  
    {{ item }}
{% endfor %}

The {% for %} tag facilitates the iteration through lists or querysets, displaying each item within the loop.

Conditional Statements

{% if condition %}  
    <p>This is displayed if the condition is true.</p>
{% else %}    
    <p>This is displayed if the condition is false</p>{% endif %}

The {% if %} tag allows the inclusion of conditional statements within templates.

Including Other Templates

{% include 'header.html' %}

The {% include %} tag enables the incorporation of the content from another template into the current one.

Template Filters

String Filters

{{ variable|lower }}

The 'lower' filter converts a string to lowercase. Additional string filters include 'upper', 'capfirst', and 'title'.

Date Formatting

{{ date_variable|date:"F d, Y" }}

The `date` filter facilitates the formatting of date and time variables in a human-readable manner.

Numerical Filters

{{ number_variable|add:5 }}

The 'add' filter allows basic arithmetic operations on numerical variables.

Combining Tags and Filters

{% for item in items %}
    <p>{{ item.name|title }} - {{ item.price|currency }}</p>
{% endfor %}

In this example, the 'title' filter capitalizes the name, while the 'currency' filter formats the price accordingly.