old_contents: from django.shortcuts import render
  
  # Create your views here.
  
  from registration.views import RegistrationView
  from registration.forms import RegistrationFormUniqueEmail
  
  class EmailRegistrationView(RegistrationView):
  
      form_class = RegistrationFormUniqueEmail
new_contents: from django.shortcuts import render
  from django.views.generic.edit import FormView
  
  from registration.forms import RegistrationFormUniqueEmail
  from registration.backends.default.views import RegistrationView
  
  from preferences.forms import PreferencesForm
  
  
  class EmailRegistrationView(RegistrationView):
  
      form_class = RegistrationFormUniqueEmail
  
  
  class UserPreferences(FormView):
      template_name = 'preferences/preferences.html'
      form_class = PreferencesForm
      success_url = '/index/'
  
      def form_valid(self, form):
          return super(UserPreferences, self).form_valid(form)
subject: Add userprefs and email reg view