code: def deny_access(self, request, **kwargs):
          
          # Raise a 403 for POST/DELETE etc.
          if request.method != 'GET':
              return HttpResponseForbidden()
  
          # Add a message, if one has been defined.
          message = self.get_access_denied_message(request)
          if message:
              messages.info(request, _(message))
  
          # Return a HTTP 302 redirect.
          redirect_url = self.get_unauthorised_redirect_url(request)
          return redirect_to_login(request.get_full_path(), login_url=redirect_url)
docs: Standard failure behaviour.
  
          Returns HTTP 403 (Forbidden) for non-GET requests.
  
          For GET requests, returns HTTP 302 (Redirect) pointing at either a URL specified
          in the class's unauthorised_redirect attribute, if one exists, or / if not. This
          version also adds a (translated) message if one is passed in.