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-rw-r--r--lib/sqlalchemy/attributes.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/sqlalchemy/attributes.py b/lib/sqlalchemy/attributes.py
index c285ea50c..07b395fee 100644
--- a/lib/sqlalchemy/attributes.py
+++ b/lib/sqlalchemy/attributes.py
@@ -95,10 +95,10 @@ class ManagedAttribute(object):
def plain_init(self, *args, **kwargs):
pass
def hasparent(self, item):
- return item.__class__._attribute_manager.attribute_history(item).get('_hasparent_' + self.key)
+ return item.__class__._attribute_manager.attribute_history(item).get(('_hasparent_', self.obj.__class__, self.key))
def sethasparent(self, item, value):
if item is not None:
- item.__class__._attribute_manager.attribute_history(item)['_hasparent_' + self.key] = value
+ item.__class__._attribute_manager.attribute_history(item)[('_hasparent_', self.obj.__class__, self.key)] = value
class ScalarAttribute(ManagedAttribute):
"""Used by AttributeManager to track the history of a scalar attribute