Support Django 3.0 and 3.1 support (1)

* Django 3.0 dropped django.utils.decorators.available_attrs()
  in favor of functools.WRAPPER_ASSIGNMENTS.
* Django 3.0 dropped django.utils.functional.curry()
  in favor of functools.partial() or functools.partialmethod().

https://docs.djangoproject.com/en/3.1/releases/3.0/#removed-private-python-2-compatibility-apis

Change-Id: I4ab0e720a8ffe13a08f5e607a59e39f252338b90

1 files changed, 1 insertions, 2 deletions

diff --git a/openstack_dashboard/api/rest/utils.py b/openstack_dashboard/api/rest/utils.py
index a9bc3ea55..8073ffa4a 100644
--- a/openstack_dashboard/api/rest/utils.py
+++ b/openstack_dashboard/api/rest/utils.py
@@ -17,7 +17,6 @@ import logging
 
 from django.conf import settings
 from django import http
-from django.utils import decorators
 
 from oslo_serialization import jsonutils
 
@@ -104,7 +103,7 @@ def ajax(authenticated=True, data_required=False,
     def decorator(function, authenticated=authenticated,
                   data_required=data_required):
         @functools.wraps(function,
-                         assigned=decorators.available_attrs(function))
+                         assigned=functools.WRAPPER_ASSIGNMENTS)
         def _wrapped(self, request, *args, **kw):
             if authenticated and not request.user.is_authenticated:
                 return JSONResponse('not logged in', 401)