code: def get_redirect_url(self, request, **kwargs):
          
          if self.url:
              url = self.url % kwargs
              args = request.META.get('QUERY_STRING', '')
              if args and self.query_string:
                  url = "%s?%s" % (url, args)
              return url
          else:
              return None
docs: Return the URL redirect to. Keyword arguments from the
          URL pattern match generating the redirect request
          are provided as kwargs to this method.