Django Programming Guide: Latest Details on Python Programming Web Framework

Django Programming Guide is one of the most popular web frameworks in the Python language. Django is written in Python language and provides many useful tools and libraries in web development, making it ideal for developing high-quality web applications. In this article, we will introduce the latest details of Django to help you better use the framework for web development.

1. Model Layer

Django’s model layer is one of the core components of a web application. Models are used to define the data model and database table structure in your application, and make it easy to perform common operations using the Django ORM. The latest version of Django has introduced some new features such as JSONField (JSON data type), ArrayField (array data type) and HStoreField (key-value pair data type), which can be used in fields on models.

In addition, Django 3.1 also introduces a new converter that allows model fields to be converted into Python objects more flexibly. For example, a BigIntegerField can be converted to a Python int object instead of the default Decimal object.

2. Views and URLconf

Django’s view and URLconf layer is another important component of a web application. URLconf is used to map URLs to view functions, and view functions are responsible for responding to HTTP requests and returning HTTP responses. Introduced in Django 3.1, Async Views use asynchronous Python code to improve performance.

In addition, Django 3.1 also introduces the pathlib-style path mode, which makes writing URLconfs easier and more intuitive. For example, you can use the path pattern /path/to/{id} to match URLs like /path/to/1 and /path/to/2 and pass {id} as a keyword argument to the view function.

3. Forms and Validation

Django’s forms framework is another important component in web development. It provides an easy way to create HTML forms and streamlines the development process by automatically validating and processing form data. The latest version of Django improves the form framework and introduces new form fields and combines multiple form fields into a single field.

Django 3.1 also introduces EmailValidator, for validating email addresses, and a new Regular Expression Validator, for validating regular expression patterns. These features make it easy to write custom form validators and perform tighter validation of form data.

4. Security

Django takes web application security very seriously. The latest version of Django introduces some new security improvements, including stronger password hashing algorithms (Argon2 and bcrypt), and the ability to redirect users securely. Django also provides Cross-site Request Forgery (CSRF) protection, which prevents malicious sites from sending requests to your site through the user's browser.

5. Django Admin

Django Admin is the management backend for web applications and contains a user interface for viewing, editing, and managing web application data. The latest version of Django Admin introduces new features such as filtering by date, searching for self-relationships, and an improved user experience.

Django 3.1 also introduces new ModelAdmin methods, making it easier to write custom views and actions. This makes Django Admin more flexible and extensible.

Summary

The Django Programming Guide is the latest ins and outs of programming the web framework in Python, including models, views and URLconfs, forms and validation, security, and Django Admin. By understanding these latest details, you will be better able to develop high-quality web applications using Django and improve your application's performance, security, and scalability. If you are interested in Python web development, Django is one of the web frameworks worth learning and using.

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