code: def get_success_url(self):
          
          slugs = '+'.join(self.metric_slugs)
          url = reverse('redis_metric_aggregate_detail', args=[slugs])
          # Django 1.6 quotes reversed URLs, which changes + into %2B. We want
          # want to keep the + in the url (it's ok according to RFC 1738)
          # https://docs.djangoproject.com/en/1.6/releases/1.6/#quoting-in-reverse
          return url.replace("%2B", "+")
docs: Reverses the ``redis_metric_aggregate_detail`` URL using
          ``self.metric_slugs`` as an argument.