old_contents: from django.shortcuts import redirect
  from django.shortcuts import render
  from django.views.decorators.cache import never_cache
  from django.contrib.auth.decorators import permission_required
  
  from registration.backends import get_backend
  
  def register(request, backend='default', template_name='registration/registration_form.html'):
      backend = get_backend(backend)
  
      # determine is registration is currently allowed. the ``request`` object
      # is passed which can be used to selectively disallow registration based on
      # the user-agent
      if not backend.registration_allowed(request):
          return redirect(*backend.registration_closed_redirect(request))
  
      form_class = backend.get_registration_form_class(request)
  
      if request.method == 'POST':
          form = form_class(request.POST, request.FILES)
  
          if form.is_valid():
              user = backend.register(request, form)
              return redirect(backend.post_registration_redirect(request, user))
      else:
          form = form_class()
  
      return render(request, template_name, {'form': form})
  
  @never_cache
  def verify(request, backend='default', template_name='registration/registration_verify.html', **kwargs):
      backend = get_backend(backend)
      profile = backend.get_profile(request, **kwargs)
  
      if profile:
          # check to see if moderation for this profile is required and whether or
          # not it is a verified account.
          if backend.moderation_required(request, profile):
              moderation_required = True
              backend.verify(request, profile, **kwargs)
          else:
              moderation_required = False
              # attempt to activate this user
              backend.activate(request, profile, **kwargs)
  
      return render(request, template_name, {
          'profile': profile,
          'moderation_required': moderation_required,
      })
  
  @never_cache
  def moderate(request, backend='default', template_name='registration/registration_moderate.html', **kwargs):
      backend = get_backend(backend)
      profile = backend.get_profile(request, **kwargs)
      form_class = backend.get_moderation_form_class(request)
  
      if request.method == 'POST':
          form = form_class(request.POST)
  
          if form.is_valid():
              backend.moderate(request, form, profile, **kwargs)
              return redirect(backend.post_moderation_redirect(request, profile))
      else:
          form = form_class()
  
      return render(request, template_name, {
          'form': form,
          'profile': profile,
      })
  
  @permission_required('registration.change_registrationprofile')
  def moderate_list(request, backend='default', template_name='registration/registration_moderate_list.html'):
      backend = get_backend(backend)
      profiles = backend.get_unmoderated_profiles(request)
  
      return render(request, template_name, {
          'profiles': profiles,
      })
  
new_contents: from django.shortcuts import redirect
  from django.shortcuts import render
  from django.views.decorators.cache import never_cache
  from django.contrib.auth.decorators import permission_required
  
  from registration.backends import get_backend
  
  def register(request, backend='default', template_name='registration/registration_form.html'):
      backend = get_backend(backend)
  
      # determine is registration is currently allowed. the ``request`` object
      # is passed which can be used to selectively disallow registration based on
      # the user-agent
      if not backend.registration_allowed(request):
          return redirect(*backend.registration_closed_redirect(request))
  
      form_class = backend.get_registration_form_class(request)
  
      if request.method == 'POST':
          form = form_class(request.POST, request.FILES)
  
          if form.is_valid():
              user = backend.register(request, form)
              return redirect(backend.post_registration_redirect(request, user))
      else:
          form = form_class()
  
      return render(request, template_name, {'form': form})
  
  @never_cache
  def verify(request, backend='default', template_name='registration/registration_verify.html', **kwargs):
      backend = get_backend(backend)
      profile = backend.get_profile(request, **kwargs)
  
      if profile:
          # check to see if moderation for this profile is required and whether or
          # not it is a verified account.
          if backend.moderation_required(request, profile):
              moderation_required = True
              backend.verify(request, profile, **kwargs)
          else:
              moderation_required = False
              # attempt to activate this user
              backend.activate(request, profile, **kwargs)
      else:
          moderation_required = None
  
      return render(request, template_name, {
          'profile': profile,
          'moderation_required': moderation_required,
      })
  
  @never_cache
  def moderate(request, backend='default', template_name='registration/registration_moderate.html', **kwargs):
      backend = get_backend(backend)
      profile = backend.get_profile(request, **kwargs)
      form_class = backend.get_moderation_form_class(request)
  
      if request.method == 'POST':
          form = form_class(request.POST)
  
          if form.is_valid():
              backend.moderate(request, form, profile, **kwargs)
              return redirect(backend.post_moderation_redirect(request, profile))
      else:
          form = form_class()
  
      return render(request, template_name, {
          'form': form,
          'profile': profile,
      })
  
  @permission_required('registration.change_registrationprofile')
  def moderate_list(request, backend='default', template_name='registration/registration_moderate_list.html'):
      backend = get_backend(backend)
      profiles = backend.get_unmoderated_profiles(request)
  
      return render(request, template_name, {
          'profiles': profiles,
      })
  
subject: Add missing reference in view