- Can now call make_transient() on an instance that

is referenced by parent objects via many-to-one,
without the parent's foreign key value getting
temporarily set to None - this was a function
of the "detect primary key switch" flush handler.
It now ignores objects that are no longer
in the "persistent" state, and the parent's
foreign key identifier is left unaffected.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/dependency.py b/lib/sqlalchemy/orm/dependency.py
index ba2ae8889..7a8c4cf70 100644
--- a/lib/sqlalchemy/orm/dependency.py
+++ b/lib/sqlalchemy/orm/dependency.py
@@ -776,7 +776,7 @@ class DetectKeySwitch(DependencyProcessor):
                                     uowcommit, self.passive_updates)
 
     def _pks_changed(self, uowcommit, state):
-        return sync.source_modified(uowcommit, 
+        return state.has_identity and sync.source_modified(uowcommit, 
                                     state, 
                                     self.mapper, 
                                     self.prop.synchronize_pairs)