1384: Этап №4 - Имя URLa выставки: fix

redirects/admin.py

@@ -46,6 +46,8 @@ class NewUrlForObject(AjaxableResponseMixin, UpdateView):
     slug_field = 'url'
 
     def get_initial(self):
+        new_url = None
+        if self.object.name:
             new_url = translit_with_separator(self.object.name.strip()).lower()
         return {
             'old_url': self.object.url,