Django for ISchoolers: Difference between revisions

In this tutorial, we’ll create our pollQ&A app in the myproject directory for simplicity. In the future, when you decide that the world needs to be able to use your pollQ&A app and plug it into their own projects, and after you determine that your app plays nicely with other apps, you can publish that directory separately!

Review: When somebody requests a page from your Web site – say, “/questions/23/”, Django will load the urls.py Python module, because it’s pointed to by the ROOT_URLCONF setting. It finds the variable named urlpatterns and traverses the regular expressions in order. When it finds a regular expression that matches – r'^pollsquestions/(\d+)/$' – it loads the function question() from qandabear/views.py. Finally, it calls that module’s detail() function like so:

<code>ViewDoesNotExist at /pollsquestions/

So, a mystery? Where is the view!? It’s nowhere! The URL parsing is going fine, but there is no one listening at the other end of the phone! This ViewDoesNotExist error happened because you haven’t written a function index() in the module pollsquestions/views.py.

Wait a minute! <Question: Question object> is an utterly unhelpful, truly wretched, beyond contemptable representation of this object. Let’s fix that by editing the Question model. Use your text editor to open the pollsqandabear/models.py file and adding a __unicode__() method to both Question and Answer: