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Mastering Django: Core

You're reading from   Mastering Django: Core The Complete Guide to Django 1.8 LTS

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Product type Paperback
Published in Dec 2016
Publisher
ISBN-13 9781787281141
Length 694 pages
Edition 1st Edition
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Author (1):
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Nigel George Nigel George
Author Profile Icon Nigel George
Nigel George
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Table of Contents (33) Chapters Close

Mastering Django: Core
Credits
About the Author
www.PacktPub.com
Preface
1. Introduction to Django and Getting Started FREE CHAPTER 2. Views and URLconfs 3. Templates 4. Models 5. The Django Admin Site 6. Forms 7. Advanced Views and URLconfs 8. Advanced Templates 9. Advanced Models 10. Generic Views 11. User Authentication in Django 12. Testing in Django 13. Deploying Django 14. Generating Non-HTML Content 15. Django Sessions 16. Djangos Cache Framework 17. Django Middleware 18. Internationalization 19. Security in Django 20. More on Installing Django 21. Advanced Database Management Model Definition Reference Database API Reference Generic View Reference Settings Built-in Template Tags and Filters Request and Response Objects Developing Django with Visual Studio

Writing your own middleware


Writing your own middleware is easy. Each middleware component is a single Python class that defines one or more of the following methods:

process_request

Method: process_request(request)

  • request is an HttpRequest object.

  • process_request() is called on each request, before Django decides which view to execute.

It should return either None or an HttpResponse object. If it returns None, Django will continue processing this request, executing any other process_request() middleware, then, process_view() middleware, and finally, the appropriate view.

If it returns an HttpResponse object, Django won't bother calling any other request, view or exception middleware, or the appropriate view; it'll apply response middleware to that HttpResponse, and return the result.

process_view

Method: process_view(request, view_func, view_args, view_kwargs)

  • request is an HttpRequest object.

  • view_func is the Python function that Django is about to use. (It's the actual function object, not...

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