code: def _get_post_url(self, obj):
          
          # Code from django ModelAdmin to determine changelist on the fly
          opts = obj._meta
          return reverse('admin:%s_%s_changelist' %
                         (opts.app_label, opts.model_name),
              current_app=self.admin_site.name)
docs: Needed to retrieve the changelist url as Folder/File can be extended
          and admin url may change