fix inheritance from non-spyne classes

plq · plq · commit cdd656b6fd8a · 2019-07-25T18:09:41.000+03:00
diff --git a/spyne/store/relational/_base.py b/spyne/store/relational/_base.py
@@ -1019,6 +1019,9 @@ def _parent_mapper_has_property(cls, cls_bases, k):
         return False
 
     for b in cls_bases:
+        if not hasattr(b, 'Attributes'):
+            continue
+
         mapper = b.Attributes.sqla_mapper
         if mapper is not None and mapper.has_property(k):
             # print("    Skipping mapping field", "%s.%s" % (cls.__name__, k),
