From b78f4604658dc875221bda5a23423cb34742e428 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Tue, 5 Mar 2019 13:28:54 -0500
Subject: Ensure association proxy works over synonym

Fixed regression where an association proxy linked to a synonym would no
longer work, both at instance level and at class level.

Fixes: #4522
Change-Id: I949079229ef87c12736c362df35444f6e30c8038
---
 lib/sqlalchemy/orm/descriptor_props.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/sqlalchemy')

diff --git a/lib/sqlalchemy/orm/descriptor_props.py b/lib/sqlalchemy/orm/descriptor_props.py
index a0ddf3a8b..28b3bc5db 100644
--- a/lib/sqlalchemy/orm/descriptor_props.py
+++ b/lib/sqlalchemy/orm/descriptor_props.py
@@ -39,6 +39,10 @@ class DescriptorProperty(MapperProperty):
             expire_missing = True
             collection = False
 
+            @property
+            def uses_objects(self):
+                return getattr(mapper.class_, prop.name).impl.uses_objects
+
             def __init__(self, key):
                 self.key = key
 
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