Book Image

Django 2 Web Development Cookbook - Third Edition

By : Jake Kronika, Aidas Bendoraitis
Book Image

Django 2 Web Development Cookbook - Third Edition

By: Jake Kronika, Aidas Bendoraitis

Overview of this book

Django is a framework designed to balance rapid web development with high performance. It handles high levels of user traffic and interaction, integrates with a variety of databases, and collects and processes data in real time. This book follows a task-based approach to guide you through developing with the Django 2.1 framework, starting with setting up and configuring Docker containers and a virtual environment for your project. You'll learn how to write reusable pieces of code for your models and manage database changes. You'll work with forms and views to enter and list data, applying practical examples using templates and JavaScript together for the optimum user experience. This cookbook helps you to adjust the built-in Django administration to fit your needs and sharpen security and performance to make your web applications as robust, scalable, and dependable as possible. You'll also explore integration with Django CMS, the popular content management suite. In the final chapters, you'll learn programming and debugging tricks and discover how collecting data from different sources and providing it to others in various formats can be a breeze. By the end of the book, you'll learn how to test and deploy projects to a remote dedicated server and scale your application to meet user demands.
Table of Contents (14 chapters)

Caching the method return value

If you call a model method with heavy calculations or database queries multiple times in the request-response cycle, the performance of the view might be very slow. In this recipe, you will learn about a pattern that you can use to cache the return value of a method for later repetitive use. Note that we are not using the Django cache framework here, only what Python provides us by default.

Getting ready

Choose an app with a model that has a time-consuming method that will be used repetitively in the same request-response cycle.

How to do it...

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