- Fixed bug in relation(), introduced in 0.5.3,

whereby a self referential relation
from a base class to a joined-table subclass would
not configure correctly.

2 files changed, 6 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/properties.py b/lib/sqlalchemy/orm/properties.py
index b9fe1c0f8..398cbe5d9 100644
--- a/lib/sqlalchemy/orm/properties.py
+++ b/lib/sqlalchemy/orm/properties.py
@@ -1021,7 +1021,11 @@ class RelationProperty(StrategizedProperty):
         
 
     def _refers_to_parent_table(self):
-        return self.parent.mapped_table is self.target
+        for c, f in self.synchronize_pairs:
+            if c.table is f.table:
+                return True
+        else:
+            return False
 
     def _is_self_referential(self):
         return self.mapper.common_parent(self.parent)
diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index a8de5c635..36357faf5 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -45,6 +45,7 @@ def find_join_source(clauses, join_to):
                 return i, f
     else:
         return None, None
+
     
 def find_tables(clause, check_columns=False, include_aliases=False, include_joins=False, include_selects=False):
     """locate Table objects within the given expression."""