Adding Logout Functionality

Now that you have given users a way to log into the website, you likely will want to give them a way to log out. Django provides the django.contrib.auth.logout() function to handle removing the logged-in user from the session.

The logout() function takes an HttpRequest object as its only parameter and decouples the logged-in User object from the session. The following example shows how to use the logout() function in a view:

def logout(request):
    auth.logout(request)
    return HttpResponseRedirect("somelogoutULR")

Try It Yourself: Add Logout Functionality to Your Website In this section, you will create a user_logout() view function that logs out the current user. Follow these steps to create and enable the logout view so that it redirects the user to the user_login() view: 1. Open the iFriends/Home/views.py file in an editor. 2. Add logout to the following import statement to import the logout() function: from django.contrib.auth import authenticate, login, logout 3. Add the following logout_user() function, shown in Listing 15.3, to log out the user and redirect the response to the user_login() view: from django.contrib.auth import authenticate, login, logout . . . def logout_user(request): logout(request) return HttpResponseRedirect('/Login') 4. Save the iFriends/Home/views.py file. 5. Open the iFriends/urls.py file in an editor. 6. Add the following URL pattern to enable the new logout_user() view: (r'^Logout/$', 'iFriends.Home.views.logout_user'), 7. Save the iFriends/urls.py file. 8. Access the following URL in a web browser. It should log you out of the website. (You can confirm this by trying to access the admin interface.) http://127.0.0.1:8000/Logout/ Listing 15.3. Imports and the Definition of the logout_user() Function in the iFriends/Home/views.py File from django.contrib.auth import authenticate, login, logout . . . def logout_user(request): logout(request) return HttpResponseRedirect('/Login')