old_contents: from django.conf import settings
  from django.contrib import admin
  from django.contrib.staticfiles.urls import staticfiles_urlpatterns
  from django.http import HttpResponse
  from django.views.generic import RedirectView
  from django.views.static import serve as static_serve
  from django.urls import include, path, re_path
  
  
  def robots_txt(request):
      permission = 'Allow' if settings.ENGAGE_ROBOTS else 'Disallow'
      return HttpResponse('User-agent: *\n{0}: /'.format(permission), content_type='text/plain')
  
  
  urlpatterns = [
      path('', include('snippets.base.urls')),
      path('robots.txt', robots_txt),
  
      # Favicon
      re_path(r'^(?P<path>favicon\.ico)$', static_serve, {'document_root': settings.STATIC_ROOT}),
      # contribute.json url
      re_path(r'^(?P<path>contribute\.json)$', static_serve, {'document_root': settings.ROOT}),
  ]
  
  if settings.ENABLE_ADMIN:
      urlpatterns += [
          re_path(r'^taggit/', include('taggit_selectize.urls')),
          path('admin/', admin.site.urls),
      ]
      admin.site.site_header = settings.SITE_HEADER
      admin.site.site_title = settings.SITE_TITLE
  
  elif settings.ADMIN_REDIRECT_URL:
      urlpatterns.append(
          path('admin/', RedirectView.as_view(url=settings.ADMIN_REDIRECT_URL))
      )
  
  if settings.OIDC_ENABLE:
      urlpatterns.append(path('oidc/', include('mozilla_django_oidc.urls')))
  
  # In DEBUG mode, serve media files through Django.
  if settings.DEBUG:
      # Use custom serve function that adds necessary headers.
      def serve_media(*args, **kwargs):
          response = static_serve(*args, **kwargs)
          response['Access-Control-Allow-Origin'] = '*'
          if (settings.BUNDLE_BROTLI_COMPRESS and (
                  kwargs['path'].startswith(settings.MEDIA_BUNDLES_ROOT) or
                  kwargs['path'].startswith(settings.MEDIA_BUNDLES_PREGEN_ROOT))):
              response['Content-Encoding'] = 'br'
          return response
  
      urlpatterns += [
          re_path(r'^media/(?P<path>.*)$', serve_media, {'document_root': settings.MEDIA_ROOT}),
      ] + staticfiles_urlpatterns()
  
new_contents: from django.conf import settings
  from django.contrib import admin
  from django.contrib.staticfiles.urls import staticfiles_urlpatterns
  from django.http import HttpResponse
  from django.views.generic import RedirectView
  from django.views.static import serve as static_serve
  from django.urls import include, path, re_path
  
  
  def robots_txt(request):
      permission = 'Allow' if settings.ENGAGE_ROBOTS else 'Disallow'
      return HttpResponse('User-agent: *\n{0}: /'.format(permission), content_type='text/plain')
  
  
  urlpatterns = [
      path('', include('snippets.base.urls')),
      path('robots.txt', robots_txt),
  
      # Favicon
      re_path(r'^(?P<path>favicon\.ico)$', static_serve, {'document_root': settings.STATIC_ROOT}),
      # contribute.json url
      re_path(r'^(?P<path>contribute\.json)$', static_serve, {'document_root': settings.ROOT}),
  ]
  
  if settings.ENABLE_ADMIN:
      urlpatterns += [
          re_path(r'^taggit/', include('taggit_selectize.urls')),
          path('admin/', admin.site.urls),
      ]
      admin.site.site_header = settings.SITE_HEADER
      admin.site.site_title = settings.SITE_TITLE
  
  elif settings.ADMIN_REDIRECT_URL:
      urlpatterns.append(
          path('admin/', RedirectView.as_view(url=f'{settings.ADMIN_REDIRECT_URL}/admin/'))
      )
  
  if settings.OIDC_ENABLE:
      urlpatterns.append(path('oidc/', include('mozilla_django_oidc.urls')))
  
  # In DEBUG mode, serve media files through Django.
  if settings.DEBUG:
      # Use custom serve function that adds necessary headers.
      def serve_media(*args, **kwargs):
          response = static_serve(*args, **kwargs)
          response['Access-Control-Allow-Origin'] = '*'
          if (settings.BUNDLE_BROTLI_COMPRESS and (
                  kwargs['path'].startswith(settings.MEDIA_BUNDLES_ROOT) or
                  kwargs['path'].startswith(settings.MEDIA_BUNDLES_PREGEN_ROOT))):
              response['Content-Encoding'] = 'br'
          return response
  
      urlpatterns += [
          re_path(r'^media/(?P<path>.*)$', serve_media, {'document_root': settings.MEDIA_ROOT}),
      ] + staticfiles_urlpatterns()
  
subject: Update admin redirect code.