Extending the user model with Django-Registration

Question

Django version: 4.0.2 Django-Registration version: 0.8 App name: userAccounts

PROBLEM: Im trying to create a user type called professor extending the user model. I can complete the registration process, the problem is that only the user is saved on the DB, the professor table keep empty. So i think the problem could be in the save method. Some clue about what could be the problem?

SETTINGS.PY

AUTH_PROFILE_MODULE = "userAccounts.Professor"

MODELS.PY - Here i create the model that extending from user and a example field

from django.db import models
from django.contrib.auth.models import User

class Professor(models.Model):
  user = models.ForeignKey(User, unique=True)
  exampleField = models.CharField(max_length=100)

FORMS.PY - When a user is saved, i save a new_profile in the professor table.

from django import forms
from registration.forms import RegistrationForm
from models import Professor
from registration.models import RegistrationProfile

class CustomRegistrationForm(RegistrationForm):
  exampleField = forms.CharField()

  def save(self, profile_callback=None):
    new_user = RegistrationProfile.objects.create_inactive_user(
        username=self.cleaned_data['username'],
        password=self.cleaned_data['password1'],
        email = self.cleaned_data['email'])
    new_professor = Professor(
        user=new_user, 
        exampleField=self.cleaned_data['exampleField'])
    new_professor.save()
    return new_user

NOTE: Im following this post: Registration form with profile's field

Answer 1

PROBLEM SOLVED - SOLUTION

Have been some days but i got it! :D i found this post from shacker: Django-Registration & Django-Profile, using your own custom form

apparently in django-registration 0.8 save() method can't be override. so, the other two options are: Use signals or Rewrite the backend.

both solutions are explained in the post i linked. If someone have the same problem i'll try to help in the comments :)

NOTE: Using signals worked fine but i had some problems taking the values from the form. So i implemented the backend method and everything went ok. I strongly recomend you read shacker's post but, if you are really desesperate, theres my code:

my forms.py

class RegistrationForm(forms.Form):
    username = forms.RegexField(regex=r'^\w+$',
                            max_length=30,
                            widget=forms.TextInput(attrs=attrs_dict),
                            label=_("Username"),
                            error_messages={'invalid': _("This value must contain only letters, numbers and underscores.")})
    email = forms.EmailField(widget=forms.TextInput(attrs=dict(attrs_dict,
                                                           maxlength=75)),
                         label=_("Email address"))
    password1 = forms.CharField(widget=forms.PasswordInput(attrs=attrs_dict, render_value=False),
                            label=_("Password"))
    password2 = forms.CharField(widget=forms.PasswordInput(attrs=attrs_dict, render_value=False),
                            label=_("Password (again)"))

    #ADITIONAL FIELDS
    #they are passed to the backend as kwargs and there they are saved
    nombre = forms.CharField(widget=forms.TextInput(attrs=attrs_dict),
                            label=_("Nombre"))

__init__.py (app/user_backend/__init__.py)

class DefaultBackend(object):
def register(self, request, **kwargs):
        username, email, password, nombre = kwargs['username'], kwargs['email'], kwargs['password1'], kwargs['nombre']
        if Site._meta.installed:
            site = Site.objects.get_current()
        else:
            site = RequestSite(request)
        new_user = RegistrationProfile.objects.create_inactive_user(username, email,
                                                                password, site)
        signals.user_registered.send(sender=self.__class__,
                                 user=new_user,
                                 request=request)

        usuario(user = User.objects.get(username=new_user.username), nombre=nombre).save()
        return new_user

root URLS.PY before this line -> url(r'profiles/', include('profiles.urls')),

    url(r'^accounts/registrar_usuario/$',
'registration.views.register',
{'backend': 'Hesperides.apps.accounts.user_regbackend.DefaultBackend','form_class':user_RegistrationForm},        
name='registration_register'
),

Thanks

mattsnider for your patience and for show me the very, very usefull pdb. Regards from spain. and: shacker and dmitko for show me the way