Question

I’m trying to use the User profile feature so here is my profile model:

class Nuser(models.Model):
  user = models.OneToOneField(User)
  initials = models.CharField(max_length=5)
  def __unicode__(self):
    return u'%s %s' % (self.first_name, self.last_name)

def create_user_profile(sender, instance, created, **kwargs):
    if created:
        Nuser.objects.create(user=instance)

post_save.connect(create_user_profile, sender=User)

My models are correctly created but if I try to add a user with the admin interface I get this error:

IntegrityError at /admin/auth/user/add/

(1062, "Duplicate entry ‘3’ for key ‘user_id’")

Am I doing something wrong ?

Answer 1

The signal is probably being registered more than once. Use the dispatch_uid argument to prevent this.

For example:

post_save.connect(create_user_profile, sender=User, dispatch_uid='autocreate_nuser')