Explaining how to use the Jinja2 template engine in Django projects

Why Jinja2?

Jinja2 is a modern template engine widely used in the Python community. Its main advantages include:

performances: Jinja2 is generally faster than Django's built-in template engine.
dexterity: Jinja2 provides rich support for filters, tests and global functions.
Easy to learn: Jinja2 has a similar syntax to Django templates and is less expensive to learn.

Installing Jinja2

First, make sure you have Jinja2 installed; if not, use pip to install it:

pip install Jinja2

Configuring Django to use Jinja2

Step 1: Update

In your Django project's in which the updateTEMPLATES setting to include Jinja2.

TEMPLATES = [
    {
        'BACKEND': '.jinja2.Jinja2',
        'DIRS': [(BASE_DIR, 'jinja2_templates')],  # Specify the Jinja2 template folder
        'APP_DIRS': True,
        'OPTIONS': {
            'environment': 'your_project.',  # Customized environment (optional)
        },
    },
    # Preserve Django template configuration (if required)
    {
        'BACKEND': '',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [],
        },
    },
]

Step 2: Customize the Jinja2 environment (optional)

You can customize the Jinja2 environment if needed. Create the and define the environment configuration.

# your_project/
from jinja2 import Environment

def environment(**options):
    env = Environment(**options)
    # Add custom filters
    ['custom_filter'] = my_custom_filter
    return env

def my_custom_filter(value):
    return ()  # Example: Converting strings to uppercase

Using Jinja2 templates

Creating Templates

existjinja2_templates Create a template file in the folder, e.g.example.jinja2。

<!-- example.jinja2 -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{{ title }}</title>
</head>
<body>
    <h1>{{ greeting | custom_filter }}</h1>
    <p>Welcome to my site.</p>
</body>
</html>

Using templates in views

In Django views, you can use Jinja2 templates just like regular Django templates.

from  import render

def home(request):
    context = {
        'title': 'Jinja2 in Django',
        'greeting': 'hello world'
    }
    return render(request, 'example.jinja2', context)

summarize

With the above steps, you can easily integrate and use the Jinja2 template engine in your Django projects. jinja2 not only provides better performance, but also adds flexibility to template design. While Django's built-in template engine is sufficient for many projects, Jinja2 is an excellent alternative for situations where performance and functionality are more important.

Above is a detailed explanation of how to use Jinja2 template engine in Django project details , more about Django using Jinja2 template engine information please pay attention to my other related articles !