Django Advanced: The Latest Demo of the Python Web Framework-Python Tutorial-php.cn

Django Advanced: The Latest Demo of the Python Web Framework

王林

Release： 2023-06-22 21:31:38

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Django is a web framework developed based on the Python language. It provides powerful functions and easy-to-use design, allowing developers to quickly create flexible and scalable web applications. In this article, we will introduce some of the latest demos of Django to give you a better understanding of the powerful features of this framework.

Powerful ORM

Django has a built-in powerful ORM (Object Relational Mapping) that allows developers to easily access and operate the database. ORM maps data in the database to Python objects, allowing developers to only focus on Python code without worrying about underlying database details.

For example, we can create a database table through the following code:

from django.db import models
 
class Blog(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField()
    date_created = models.DateTimeField(auto_now_add=True)

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The above code indicates that we want to create a table named "Blog". The table contains 3 fields: title, content and date_created. Among them, title and content are strings of CharField and TextField types, and date_created is a date of DateTimeField type.

In addition, Django also supports multiple databases, and users can easily connect and operate different databases.

Flexible URL routing

Django’s URL routing is very flexible and you can customize the structure and parameters of the URL. For example, we can create a URL named "blog" to display the details of a specific blog through the following code:

from django.urls import path
from . import views
 
urlpatterns = [
    path('blog/<int:blog_id>/', views.blog_detail, name='blog_detail'),
]

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The above code indicates that we want to create a URL named "blog_detail", where Contains an integer parameter "blog_id" to find a specific blog. In this way, we can build various flexible URL structures to facilitate users to access and use our web applications.

Powerful template engine

Django has a built-in powerful template engine that allows developers to easily build dynamic web pages. Template engines allow developers to create dynamic content using Python code and template languages to generate rich and complex pages.

For example, we can use the following code to create a basic HTML template:

<!DOCTYPE html>
<html>
<head>
    <title>{{title}}</title>
</head>
<body>
    {% block content %}
    {% endblock %}
</body>
</html>

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The above code indicates that we want to create a basic HTML template that contains a placeholder {{title} }, used to display the title of the page, and a content block {% block content %} ... {% endblock %}, which can be filled by other views.

Powerful security features

Django provides powerful security features, including cross-site scripting (XSS) protection, cross-site request forgery (CSRF) protection, and clickjacking ( protection against clickjacking), etc. These features allow developers to easily develop secure web applications that protect user data and privacy.

For example, we can enable CSRF protection through the following code:

MIDDLEWARE = [
    # ...
    'django.middleware.csrf.CsrfViewMiddleware',
    # ...
]

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The above code indicates that we want to enable CSRF protection in the middleware. This means that all POST requests need to include a CSRF token in the request to ensure that the source of the request is legitimate.

Summary

Through the above demonstration, we can see that Django provides powerful functions and easy-to-use design, allowing developers to quickly create flexible and scalable web applications. Whether you are a beginner in web application development or an experienced developer, you can easily develop your own applications using Django.

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