Django 2 by Example: Build powerful and reliable Python web applications from scratch

Antonio Melé

€28.99 ~~€32.99~~

4.7 (43 Ratings)

eBook Feb 2025 526 pages 1st Edition

Antonio Melé

€28.99 ~~€32.99~~

4.7 (43 Ratings)

eBook Feb 2025 526 pages 1st Edition

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Django 2 by Example

Enhancing Your Blog with Advanced Features

In the preceding chapter, we learned the main components of Django by developing a simple blog application. We created a simple blog application using views, templates, and URLs. In this chapter, we will extend the functionalities of the blog application with features that can be found in many blogging platforms nowadays. In this chapter, you will learn the following topics:

Using canonical URLs for models
Creating SEO-friendly URLs for posts
Adding pagination to the post list view
Building class-based views
Sending emails with Django
Using Django forms to share posts via email
Adding comments to posts using forms from models

The source code for this chapter can be found at https://github.com/PacktPublishing/Django-4-by-example/tree/main/Chapter02.

All Python packages used in this chapter are included in the requirements.txt file in the source code for the chapter. You can follow...

Creating SEO-friendly URLs for posts

The canonical URL for a blog post detail view currently looks like /blog/1/. We will change the URL pattern to create SEO-friendly URLs for posts. We will be using both the publish date and slug values to build the URLs for single posts. By combining dates, we will make a post detail URL to look like /blog/2022/1/1/who-was-django-reinhardt/. We will provide search engines with friendly URLs to index, containing both the title and date of the post.

To retrieve single posts with the combination of publication date and slug, we need to ensure that no post can be stored in the database with the same slug and publish date as an existing post. We will prevent the Post model from storing duplicated posts by defining slugs to be unique for the publication date of the post.

Edit the models.py file and add the following unique_for_date parameter to the slug field of the Post model:

class Post(models.Model):
    # ...
    slug = models.SlugField...

Modifying the URL patterns

Let’s modify the URL patterns to use the publication date and slug for the post detail URL.

Edit the urls.py file of the blog application and replace the line:

path('<int:id>/', views.post_detail, name='post_detail'),

With the lines:

path('<int:year>/<int:month>/<int:day>/<slug:post>/',
         views.post_detail,
         name='post_detail'),

The urls.py file should now look like this:

from django.urls import path
from . import views
app_name = 'blog'
urlpatterns = [
    # Post views
    path('', views.post_list, name='post_list'),
    path('<int:year>/<int:month>/<int:day>/<slug:post>/',
         views.post_detail,
         name='post_detail'),
]

The URL pattern for the post_detail view takes the following arguments:

year: Requires an integer
month: Requires...

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Key benefits

Learn Django 2 by building real-world web applications from scratch
Develop powerful web applications quickly using the best coding practices
Integrate other technologies into your application with clear, step-by-step explanations and comprehensive example code

Description

If you want to learn the entire process of developing professional web applications with Django 2, then this book is for you. You will walk through the creation of four professional Django 2 projects, teaching you how to solve common problems and implement best practices. You will learn how to build a blog application, a social image bookmarking website, an online shop and an e-learning platform. The book will teach you how to enhance your applications with AJAX, create RESTful APIs and set up a production environment for your Django 2 projects. The book walks you through the creation of real-world applications, solving common problems, and implementing best practices. By the end of this book, you will have a deep understanding of Django 2 and how to build advanced web applications.

Who is this book for?

If you are a web developer who wants to see how to build professional sites with Django 2, this book is for. You will need a basic knowledge of Python, HTML, and JavaScript, but you don't need to have worked with Django before.

What you will learn

Build practical real-world web applications with Django 2
Use Django 2 with other technologies such as Redis and Celery
Develop pluggable Django 2 applications
Create advanced features, optimize your code, and use the cache framework
Add internationalization to your Django 2 projects
Enhance the user experience using JavaScript and AJAX
Add social features to your projects
Build RESTful APIs for your applications

What do you get with eBook?

Instant access to your Digital eBook purchase

Download this book in EPUB and PDF formats

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Robert Jan 09, 2024

This book does a great job of walking the reader step-by-step through through several sizeable Django projects. I did not have any background in Django prior to reading this and found it fairly easy to contextually figure a lot of things out. This is a great resource for anyone who learns by doing or just wants to build some larger scale projects than what most introductory books on Django would deal with.

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Mae Sep 21, 2022

The media could not be loaded. This book is the most practical resource to learn Django. The book teaches you Django by building 4 complete projects that include integration with other technologies like Redis, Celery, Memcached and multiple Python libraries and third-party Django applications.This book does the best job covering the basics of Django and much more than that. The book is easy to follow but assumes you some basic Python and web development knowledge (HTML, CSS, JavaScript). I love the examples to create a recommendation engine, a Facebook-like user activity feed and real-time async chat application using channels.

Amazon Verified review

A. J. Salazar Sep 02, 2022

With a wide range of practical applications and in depth code implementation, this book is a must-have for the aspiring Django pros.

Nina Ortega Dec 19, 2022

For people like me, who learn best from reading instructions, this is the perfect all-inclusive, detailed, and clear manual on how to learn and code with Django.Although the technical jargon can be difficult at the beginning it is worth the effort.Definitely something worth spending money on.

MC Sep 05, 2022

This book, written about the latest version of Django, is well worth the read! There is a “learning by doing” approach, which I appreciated. Having had a few years experience in the framework, I found that the book helped fill in some knowledge gaps, as well as expanded my understanding of the framework’s features.Some prior knowledge does help, when moving through this book, but is not completely necessary. One who has had some programming experience and is familiar with the workings of a framework will be best suited for this comprehensive read.The book, itself, is very well written and easy to understand (having had prior experience helps). Most concepts contain links to the relevant Django documentation for further reading as one builds each of the example applications. I definitely picked up some tips and tricks, and expanded my knowledge of the framework after reading this book!I can’t imagine a more thorough book on the subject, but also (always) recommend reading more than just one book about Django.That being said, I highly recommend adding this book to any Pythonista’s library who is interested in using the Django framework for either personal projects or professionally.

Django 2 by Example: Build powerful and reliable Python web applications from scratch

What do you get with eBook?

Django 2 by Example

Enhancing Your Blog with Advanced Features

Using canonical URLs for models

Creating SEO-friendly URLs for posts

Modifying the URL patterns

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