Django - using django-registration app with signals - django

Question

Ok, so I've built a basic Django Project and successfuly installed the django-registration app - http://www.michelepasin.org/blog/2011/01/14/setting-up-django-registration/
I want to expand a User to include information like Birthday, Profile Picture etc. I created an app called user_profile. This is the signals.py inside the registration app:
from django.dispatch import Signal
user_activated = Signal(providing_args=["user", "request"])
From inside my new app, user_profile, what is the way to listen for this signal? I think I should create a signals.py file, but what should I write inside? a from registration.signals import user_activated statement and what else? This new app which I've created also has a model.py which I want to automatically populate with some data when a new account has been activated.
And another secondary question: when I link a URL with a class based view, which method of that class is triggered? If I have 4 methods inside inside the class based view, how django decides which one to use? Thanks

Answer 1

OKay, if I understand your problem, you'll have put something like this at the end of your user_profile/models.py file :
from django.contrib.auth.models import User
from django.db.models.signals import post_save
def create_user_profile(sender, instance, **kwargs):
"""
Function to create user profile.
sender is the model class that sends the signal,
while instance is an actual instance of that class
"""
# your own logic here, for example :
user = instance
profile = UserProfile()
profile.user = user # link the profile to the user
profile.save()
# connect the function to the signal, for User instances)
post_save.connect(create_user_profile, sender=User)
For your second question, many methods are called during class based views execution. In order to use class based views, your URLconf should look like this :
from myapp import views
from django.conf.urls import patterns, url
urlpatterns = patterns('',
url(r'list_something', views.YourListView.as_view(), name="list_something"),
)
But you should not override as_view() method in your view. Depending on what you're trying to do, you'll have other methods to overwrite. I can maybe help you if you provide more info.

Answer 2

Thanks Eliot, here is what I have so far:
signals.py is now removed.
models.py:
import datime
from django.db import models
from django.contrib.auth.models import User
try:
from django.utils.timezone import now as datetime_now
except ImportError:
datetime_now = datetime.datetime.now
class UserProfileManager(models.Manager):
def create_user_profile(self, user):
user_profile = self.create(user = user)
return user_profile
class UserProfile(models.Model):
YEARS = tuple(zip(range(1900, datetime_now.year)), zip(range(1900, datetime_now.year)))
MONTHS = (
('January','January'),('February','February'),('March','March'),('April','April'),
('May','May'), ('June','June'),('July','July'),('August','August'),
('September','September'),('October','October'),('November','November'), ('December', 'December')
)
GENDERS = (('M', 'Male'), ('F', 'Female'))
user = models.ForeignKey(User, unique=True, verbose_name=_('user'))
birthday_year = models.CharField(max_length=1, blank = True, null = True, choices=YEARS)
birthday_month = models.CharField(max_length=1, blank = True, null = True, choices=MONTHS)
gender = models.CharField(max_length=1, blank = True, null = True, choices=GENDERS)
creation_time = models.DateTimeField(auto_now_add = True, auto_now = False)
update_time = models.DateTimeField(auto_now_add = False, auto_now = True)
class Meta:
verbose_name = _('user profile')
verbose_name_plural = _('user profiles')
objects = UserProfileManager()
def create_user_profile(sender, instance, **kwargs):
profile = UserProfile.objects.create_user_profile(user=instance)
profile.save()
post_save.connect(create_user_profile, sender=User)