Arun Ravindran - Django Design Patterns and Best Practices: Industry-standard web development techniques and solutions using Python, 2nd Edition

Copyright 2018 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author(s), nor Packt Publishing or its dealers and distributors, will be held liable for any damages caused or alleged to have been caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

Commissioning Editor: Amarabha Banerjee
Acquisition Editor: Shweta Pant
Content Development Editor: Gauri Pradhan
Technical Editor: Surabhi Kulkarni
Copy Editor: Safis Editing
Project Coordinator: Sheejal Shah
Proofreader: Safis Editing
Indexer: Pratik Shirodkar
Graphics: Jason Monteiro
Production Coordinator: Aparna Bhagat

First published: March 2015
Second edition: May 2018

Production reference: 1300518

Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham
B3 2PB, UK.

ISBN 978-1-78883-134-5

www.packtpub.com

Mapt is an online digital library that gives you full access to over 5,000 books and videos, as well as industry leading tools to help you plan your personal development and advance your career. For more information, please visit our website.

• Spend less time learning and more time coding with practical eBooks and Videos from over 4,000 industry professionals

• Improve your learning with Skill Plans built especially for you

• Get a free eBook or video every month

• Mapt is fully searchable

• Copy and paste, print, and bookmark content

Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at www.PacktPub.com and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at service@packtpub.com for more details.

At www.PacktPub.com , you can also read a collection of free technical articles, sign up for a range of free newsletters, and receive exclusive discounts and offers on Packt books and eBooks.

Arun Ravindran is an avid speaker and blogger who has been tinkering with Django since 2007 for projects ranging from intranet applications to social networks. He is a long-time open source enthusiast and Python developer. His articles and screencasts have been invaluable to the rapidly growing Django community. He is currently a developer member of the Django Software Foundation. Arun is also a movie buff and loves graphic novels and comics.

Antoni Aloy is a computer engineer graduated from the Universitat Oberta de Catalunya (UOC). He has been working with Python since 1999 and with Django since its early releases. In 2009, he founded APSL (apsl.net), a development and IT company based in Mallorca (Spain), in which Python and Django are the backbone of the software development department. He is also a founding member of the Python Espaa Association and promotes the use of Python and Django through workshops and articles.

If you're interested in becoming an author for Packt, please visit authors.packtpub.com and apply today. We have worked with thousands of developers and tech professionals, just like you, to help them share their insight with the global tech community. You can make a general application, apply for a specific hot topic that we are recruiting an author for, or submit your own idea.

Django is one of the most popular web frameworks today. It powers large websites such as Pinterest, Instagram, Disqus, and NASA. With a few lines of code, you can rapidly build a functional and secure website that can scale to millions of users.

This is not a book about Gang of Four design patterns.

Instead, it explains solutions to several common design problems faced by Django developers. Sometimes there are several solutions, but we tend to seek recommended approach. Experienced developers frequently use certain idioms, while deliberately avoiding certain others.

This book is a collection of such patterns and insights. It is organized into chapters each covering a key area of the framework, such as models, or an aspect of web development, such as debugging. The focus is on building clean, modular, and more maintainable code.

Every attempt has been made to present up-to-date information and use the latest versions. Django 2.0 comes loaded with exciting new features, such as its simplified URL syntax, and Python 3.6 is the bleeding edge of the language with several new modules, such as asyncio, both of which have been used here.

Superheroes are a constant theme throughout the book. Most of the code examples are about building SuperBook, a social network of superheroes. As a novel way to present the challenges of a web development project, an exciting fictional narrative has been woven into each chapter in the form of story boxes.