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Getting Started with Python Django: Explore the Endless Possibilities of Web Development

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2024-03-28 15:41:01623browse

Python Django 入门:探索 web 开发的无限可能

Understanding Django’s architecture

Django follows the Model-Template-View (MTV) architecture, which organizes application logic into three main components:

  • Model: Defines the database tables and objects used in the application.
  • View: Process incoming requests and generate responses.
  • Template: Responsible for rendering the data generated by the view.

Set up Django development environment

Before you start building a DjanGo application, you need to configure the development environment. This involves installing the necessary software, such as python, Django, and an integrated development environment (IDE).

Create your first Django application

Using Django's command line interface (CLI), you can easily create new Django applications. This command will generate a directory structure containing the project and application files.

Define data model

Data model definitionDatabaseTable and its columns. Django provides a simple and concise syntax for defining models. For example, the following code defines a model named Book:

from django.db import models

class Book(models.Model):
title = models.CharField(max_length=255)
author = models.CharField(max_length=100)
isbn = models.CharField(max_length=13)

Handling requests in views

The view handles incoming Http requests and performs actions as needed. Django provides a built-in HttpRequest object for accessing request data, and a built-in HttpResponse object for generating responses. For example, the following view returns a list of all Book objects:

from django.shortcuts import render

def book_list(request):
books = Book.objects.all()
return render(request, "book_list.html", {"books": books})

Use templates to render data

Template is used to render the data generated by the view. Django uses the Jinja2 template engine, which provides a powerful and easy-to-use syntax for rendering dynamic content. For example, the following template displays the list of books returned by the book_list view:

{% for book in books %}
<li>{{ book.title }} by {{ book.author }}</li>
{% endfor %}

Deploying Django Application

Once the application is developed, it needs to be deployed to the WEB server for user access. Django offers a variety of deployment options, including using a web server such as Apache or Nginx.

In-depth Django

After mastering the basics of Django, beginners can delve into advanced topics such as:

  • Authentication and Authorization
  • Form processing
  • CustomizationMiddleware

With continued learning and practice, beginners can improve their Django skills and build more complex and robust web applications.

in conclusion

Python Django is a powerful web development framework that provides beginners with a platform to build dynamic, scalable and user-friendly web applications. Beginners can start their web development journey by understanding Django's architecture, setting up a development environment, defining data models, handling requests, using templates to render data, and deploying applications. Delving into advanced topics will enable them to further develop their skills and create more complex applications.

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