Book Image

Django 4 By Example - Fourth Edition

By : Antonio Melé
4.6 (5)
Book Image

Django 4 By Example - Fourth Edition

4.6 (5)
By: Antonio Melé

Overview of this book

Django 4 By Example is the 4th edition of the best-selling franchise that helps you build web apps. This book will walk you through the creation of real-world applications, solving common problems, and implementing best practices using a step-by-step approach. You'll cover a wide range of web app development topics as you build four different apps: A blog application: Create data models, views, and URLs and implement an admin site for your blog. Create sitemaps and RSS feeds and implement a full-text search engine with PostgreSQL. A social website: Implement authentication with Facebook, Twitter, and Google. Create user profiles, image thumbnails, a bookmarklet, and an activity stream. Implement a user follower system and add infinite scroll pagination to your website. An e-commerce application: Build a product catalog, a shopping cart, and asynchronous tasks with Celery and RabbitMQ. Process payments with Stripe and manage payment notifications via webhooks. Build a product recommendation engine with Redis. Create PDF invoices and export orders to CSV. An e-learning platform: Create a content management system to manage polymorphic content. Cache content with Memcached and Redis. Build and consume a RESTful API. Implement a real-time chat using WebSockets with ASGI. Create a production environment using NGINX, uWSGI and Daphne with Docker Compose. This is a practical book that will have you creating web apps quickly.
Table of Contents (20 chapters)
18
Other Books You May Enjoy
19
Index

Accessing the course contents

You need a view for displaying the courses that students are enrolled on, and a view for accessing the actual course contents. Edit the views.py file of the students application and add the following code to it:

from django.views.generic.list import ListView
from courses.models import Course
class StudentCourseListView(LoginRequiredMixin, ListView):
    model = Course
    template_name = 'students/course/list.html'
    def get_queryset(self):
        qs = super().get_queryset()
        return qs.filter(students__in=[self.request.user])

This is the view to see courses that students are enrolled on. It inherits from LoginRequiredMixin to make sure that only logged-in users can access the view. It also inherits from the generic ListView for displaying a list of Course objects. You override the get_queryset() method to retrieve only the courses that a student is enrolled on; you filter the QuerySet by the student’s ManyToManyField...