Fix for inheritance bug and db_alias

mongoengine/__init__.py

@@ -12,7 +12,7 @@ from signals import *
 __all__ = (document.__all__ + fields.__all__ + connection.__all__ +
            queryset.__all__ + signals.__all__)
 
-VERSION = (0, 6, 15)
+VERSION = (0, 6, 16)
 
 
 def get_version():

mongoengine/base.py

@@ -649,8 +649,13 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
                     del(attrs['meta']['collection'])
                 if base._get_collection_name():
                     collection = base._get_collection_name()
-                # Propagate index options.
-                for key in ('index_background', 'index_drop_dups', 'index_opts'):
+
+                # Propagate inherited values
+                keys_to_propogate = (
+                    'index_background', 'index_drop_dups', 'index_opts',
+                    'allow_inheritance', 'queryset_class', 'db_alias',
+                )
+                for key in keys_to_propogate:
                     if key in base._meta:
                         base_meta[key] = base._meta[key]
 
@@ -659,11 +664,6 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
                     abstract_base_indexes += base._meta.get('indexes', [])
                 else:
                     base_indexes += base._meta.get('indexes', [])
-                # Propagate 'allow_inheritance'
-                if 'allow_inheritance' in base._meta:
-                    base_meta['allow_inheritance'] = base._meta['allow_inheritance']
-                if 'queryset_class' in base._meta:
-                    base_meta['queryset_class'] = base._meta['queryset_class']
             try:
                 base_meta['objects'] = base.__getattribute__(base, 'objects')
             except TypeError:
@@ -671,6 +671,7 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
             except AttributeError:
                 pass
 
+        # defaults
         meta = {
             'abstract': False,
             'collection': collection,