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-rw-r--r--lib/sqlalchemy/orm/dynamic.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/dynamic.py b/lib/sqlalchemy/orm/dynamic.py
index a46734dde..0de5b98ff 100644
--- a/lib/sqlalchemy/orm/dynamic.py
+++ b/lib/sqlalchemy/orm/dynamic.py
@@ -22,10 +22,11 @@ from sqlalchemy.orm.util import _state_has_identity, has_identity
class DynaLoader(strategies.AbstractRelationLoader):
- def init_class_attribute(self):
+ def init_class_attribute(self, mapper):
self.is_class_level = True
strategies._register_attribute(self,
+ mapper,
useobject=True,
impl_class=DynamicAttributeImpl,
target_mapper=self.parent_property.mapper,