+
+ def response_add(self, request, obj, post_url_continue='../%s/'):
+ # If it's an ajax request, return a json response containing the necessary information.
+ if request.is_ajax():
+ return HttpResponse(json.dumps({'pk': escape(obj._get_pk_val()), 'unicode': escape(obj)}))
+ return super(TagAdmin, self).response_add(request, obj, post_url_continue)
+
+
+class AddTagAdmin(admin.ModelAdmin):
+ def formfield_for_manytomany(self, db_field, request=None, **kwargs):
+ """
+ Get a form Field for a ManyToManyField.
+ """
+ # If it uses an intermediary model that isn't auto created, don't show
+ # a field in admin.
+ if not db_field.rel.through._meta.auto_created:
+ return None
+
+ if db_field.rel.to == Tag and db_field.name in (list(self.filter_vertical) + list(self.filter_horizontal)):
+ opts = Tag._meta
+ if request.user.has_perm(opts.app_label + '.' + opts.get_add_permission()):
+ kwargs['widget'] = TagFilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical))
+ return db_field.formfield(**kwargs)
+
+ return super(AddTagAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)
+