Django-регистрация, кастомная регистрация и валидация

После нескольких дней решения этой проблемы мне нужна ваша помощь!

Мне нужны две разные регистрационные формы в расширенной регистрационной форме django.

Мой urls.py:

from django.conf.urls import patterns, url, include
from views import RegistrationViewCandidate, RegistrationViewCompany

urlpatterns = patterns('',
        url(r'accounts/register/company$', RegistrationViewCompany.as_view(), name='registration_company'),
        url(r'accounts/register/candidate$', RegistrationViewCandidate.as_view(), name='registration_candidate'),
        url(r'accounts/', include('registration.backends.default.urls')),
)

Мой views.py:

# -*- coding: utf-8 -*-
from django.core.urlresolvers import reverse_lazy as _
from registration.forms import RegistrationForm
from registration.views import RegistrationView
from models import Candidate, Company
from django import forms
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit, Layout, Field, Fieldset
from crispy_forms.bootstrap import (PrependedText, PrependedAppendedText, FormActions)


class CandidateForm(forms.ModelForm):

    class Meta:
        model = Candidate
        fields = ('first_name', 'last_name', 'candidate_city', 'candidate_region', 'candidate_phone',
                   'candidate_birthday','candidate_website_url', 'candidate_github_url')


class CompanyForm(forms.ModelForm):

    class Meta:
        model = Company
        fields = ('comp_name', 'comp_address', 'comp_email', 'comp_region',  'comp_zip', 'comp_phone',
                  'comp_description', 'comp_city', 'comp_country', 'comp_website_url', 'comp_twitter_url',
                  'comp_fcbk_url')


class CustomCandidateForm(RegistrationForm):
    user_class_model = forms.CharField(initial="Candidate", label="user_class_model")
    first_name = forms.CharField()
    last_name = forms.CharField()
    candidate_region = forms.CharField()
    candidate_city = forms.CharField()
    candidate_birthday = forms.DateField()
    candidate_phone = forms.CharField()
    candidate_website_url = forms.URLField(required=False)
    candidate_github_url = forms.URLField(required=False)

    def __init__(self, *args, **kwargs):
        super(CustomCandidateForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_method = 'POST'
        self.helper.form_class = 'form-horizontal'
        self.helper.form_action = ''
        self.helper.label_class = 'col-sm-2'
        self.helper.field_class = 'col-sm-4'
        self.helper.layout = Layout(
            Fieldset(
                'Account details',
                Field('user_class_model'),
                Field('username', css_class='input-sm'),
                Field('email', css_class='input-sm'),
                Field('password1'),
                Field('password2'),
            ),
            Fieldset(
                'Personnal Informations ',
                Field('first_name', css_class='input-sm'),
                Field('last_name', css_class='input-sm'),
                Field('candidate_region', label='Region'),
                Field('candidate_city', label='City'),
                Field('candidate_birthday'),
                Field('candidate_phone'),
                Field('candidate_website_url'),
                Field('candidate_github_url'),
            ),

        )
        self.helper.add_input(Submit('submit', 'Submit', css_class='btn-primary'))


class CustomCompanyForm(RegistrationForm):
    user_class_model = forms.CharField(initial="Company", label="user_class_model")


class RegistrationViewCompany(RegistrationView):
    form_class = CustomCompanyForm


class RegistrationViewCandidate(RegistrationView):
    form_class = CustomCandidateForm

CustomCandidateForm.base_fields.update(CandidateForm.base_fields)
CustomCompanyForm.base_fields.update(CompanyForm.base_fields)

Как вы видели, я расширяю RegistrationView и RegistrationForm. Моя проблема в этой строке:

self.helper.form_action = ''

С этим параметром для form_action, если у меня есть ошибка в моей форме, я перенаправляю на форму с ошибкой повышения о поле с ошибкой. Отлично, но если у меня нет ошибок в моей форме (если моя форма чистая), django-registration вызывает эту ошибку:

NotImplementedError at /user/accounts/register/candidate

No exception supplied

Request Method:     POST
Request URL:    http://127.0.0.1:8000/user/accounts/register/candidate
Django Version:     1.5.4
Exception Type:     NotImplementedError
Exception Location:     /home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/registration/views.py in register, line 109
Python Executable:  /home/damien/Developpements/Django/virtualenv/bin/python2.7
Python Version:     2.7.4
Python Path:    

['/home/damien/Developpements/Django/virtualenv/site_web/linuxemploi',
 '/home/damien/Developpements/Django/virtualenv/site_web/linuxemploi',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7/plat-x86_64-linux-gnu',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7/lib-tk',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7/lib-old',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages']

Server time:    sam, 2 Nov 2013 14:47:26 +0100

Traceback:
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/django/views/generic/base.py" in view
  68.             return self.dispatch(request, *args, **kwargs)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/registration/views.py" in dispatch
  79.         return super(RegistrationView, self).dispatch(request, *args, **kwargs)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  86.         return handler(request, *args, **kwargs)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/registration/views.py" in post
  35.             return self.form_valid(request, form)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/registration/views.py" in form_valid
  82.         new_user = self.register(request, **form.cleaned_data)
File "/home/damien/Developpements/Django/virtualenv/lib/python2.7/site-packages/registration/views.py" in register
  109.         raise NotImplementedError

Exception Type: NotImplementedError at /user/accounts/register/candidate
Exception Value: 

Если я поставлю:

 self.helper.form_action = '.'

У меня нет ошибки при регистрации django, но если у меня есть ошибка в моей форме (форма не чистая), я перенаправляю на / user / accounts / register, а не / user / accounts / зарегистрируйтесь * / кандидат * или / компания.

Любые идеи ?

Большое спасибо