Django ist ein äußerst beliebtes und voll ausgestattetes serverseitiges Web-Framework, das in Python geschrieben wurde. Das Modul zeigt Ihnen, warum Django eines der beliebtesten Webserver-Frameworks ist, wie man eine Entwicklungsumgebung einrichtet und wie man damit beginnt, eigene Webanwendungen zu erstellen.
Vor dem Start dieses Moduls müssen Sie keine Kenntnisse über Django haben. Im Idealfall sollten Sie verstehen, was serverseitige Webprogrammierung und Web-Frameworks sind, indem Sie die Themen in unserem Modul Erste Schritte der serverseitigen Webprogrammierung lesen.
Allgemeine Kenntnisse über Programmierkonzepte und Python werden empfohlen, sind aber nicht zwingend erforderlich, um die Kernkonzepte zu verstehen.
Hinweis: Python ist eine der einfachsten Programmiersprachen, die Anfänger lesen und verstehen können. Wenn Sie dieses Modul jedoch besser verstehen wollen, gibt es zahlreiche kostenlose Bücher und Tutorials im Internet, die Ihnen helfen. (neue Programmierer sollten sich die Seite Python for Non Programmers im python.org-Wiki ansehen).
- Django introduction
- In this first Django article we answer the question "What is Django?" and give you an overview of what makes this web framework special. We'll outline the main features, including some advanced functionality that we won't have time to cover in detail in this module. We'll also show you some of the main building blocks of a Django application, to give you an idea of what it can do before you set it up and start playing.
- Setting up a Django development environment
- Now that you know what Django is for, we'll show you how to setup and test a Django development environment on Windows, Linux (Ubuntu), and Mac OS X — whatever common operating system you are using, this article should give you what you need to be able to start developing Django apps.
- Django Tutorial: The Local Library website
- The first article in our practical tutorial series explains what you'll learn, and provides an overview of the "local library" — an example website we'll be working through and evolving in subsequent articles.
- Django Tutorial Part 2: Creating a skeleton website
- This article shows how you can create a "skeleton" website project as a basis, which you can then go on to populate with site-specific settings, urls, models, views, and templates.
- Django Tutorial Part 3: Using models
- This article shows how to define models for the LocalLibrary website — models represent the data structures we want to store our app's data in, and also allow Django to store data in a database for us (and modify it later on). It explains what a model is, how it is declared, and some of the main field types. It also briefly shows a few of the main ways you can access model data.
- Django Tutorial Part 4: Django admin site
- Now that we've created models for the LocalLibrary website, we'll use the Django Admin site to add some "real" book data. First we'll show you how to register the models with the admin site, then we'll show you how to login and create some data. At the end we show some ways in which you can further improve the presentation of the admin site.
- Django Tutorial Part 5: Creating our home page
- We're now ready to add the code to display our first full page — a home page for the LocalLibrary that shows how many records we have of each model type and provides sidebar navigation links to our other pages. Along the way we'll gain practical experience in writing basic URL maps and views, getting records from the database, and using templates.
- Django Tutorial Part 6: Generic list and detail views
- This tutorial extends our LocalLibrary website, adding list and detail pages for books and authors. Here we'll learn about generic class-based views, and show how they can reduce the amount of code you have to write for common use cases. We'll also go into URL handling in greater detail, showing how to perform basic pattern matching.
- Django Tutorial Part 7: Sessions framework
- This tutorial extends our LocalLibrary website, adding a session-based visit-counter to the home page. This is a relatively simple example, but it does show how you can use the session framework to provide persistent behaviour for anonymous users in your own sites.
- Django Tutorial Part 8: User authentication and permissions
- In this tutorial we'll show you how to allow users to login to your site with their own accounts, and how to control what they can do and see based on whether or not they are logged in and their permissions. As part of this demonstration we'll extend the LocalLibrary website, adding login and logout pages, and user- and staff-specific pages for viewing books that have been borrowed.
- Django Tutorial Part 9: Working with forms
- In this tutorial we'll show you how to work with HTML Forms in Django, and in particular the easiest way to write forms to create, update, and delete model instances. As part of this demonstration we'll extend the LocalLibrary website so that librarians can renew books, and create, update, and delete authors using our own forms (rather than using the admin application).
- Django Tutorial Part 10: Testing a Django web application
- As websites grow they become harder to test manually — not only is there more to test, but, as the interactions between components become more complex, a small change in one area can require many additional tests to verify its impact on other areas. One way to mitigate these problems is to write automated tests, which can easily and reliably be run every time you make a change. This tutorial shows how to automate unit testing of your website using Django's test framework.
- Django Tutorial Part 11: Deploying Django to production
- Now you've created (and tested) an awesome LocalLibrary website, you're going to want to install it on a public web server so that it can be accessed by library staff and members over the Internet. This article provides an overview of how you might go about finding a host to deploy your website, and what you need to do in order to get your site ready for production.
- Django web application security
- Protecting user data is an essential part of any website design. We previously explained some of the more common security threats in the article Web security — this article provides a practical demonstration of how Django's in-built protections handle such threats.
The following assessment will test your understanding of how to create a website using Django, as described in the guides listed above.
- DIY Django mini blog
- In this assessment you'll use some of the knowledge you've learned from this module to create your own blog.