code: def deletion_not_allowed(self, request, obj, language_code):
          
          opts = self.model._meta
          context = {
              'object': obj.master,
              'language_code': language_code,
              'opts': opts,
              'app_label': opts.app_label,
              'language_name': get_language_title(language_code),
              'object_name': force_text(opts.verbose_name)
          }
          return render(request, self.deletion_not_allowed_template, context)
docs: Deletion-not-allowed view.