Saving profile with registration in Django-Registration

Question

In Django-Registration it says you can save a custom profile when you save a user.
But I have no idea what the documentation is asking me to do. Here is what they say

Answer 1

You can pass the callback function in your urls.py file.

from mysite.profile.models import UserProfile


url( r'^accounts/register/$',      'registration.views.register',
        { 'profile_callback': UserProfile.objects.create }, name = 'registration_register' ),

Substitute your own function for UserProfile.objects.create as needed.