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-rw-r--r--lib/sqlalchemy/orm/events.py13
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/sqlalchemy/orm/events.py b/lib/sqlalchemy/orm/events.py
index 97019bb4e..14b3a770e 100644
--- a/lib/sqlalchemy/orm/events.py
+++ b/lib/sqlalchemy/orm/events.py
@@ -360,14 +360,17 @@ class _EventsHold(object):
def populate(cls, class_, subject):
for subclass in class_.__mro__:
if subclass in cls.all_holds:
- if subclass is class_:
- collection = cls.all_holds.pop(subclass)
- else:
- collection = cls.all_holds[subclass]
+ collection = cls.all_holds[subclass]
for ident, fn, raw, propagate in collection:
if propagate or subclass is class_:
+ # since we can't be sure in what order different classes
+ # in a hierarchy are triggered with populate(),
+ # we rely upon _EventsHold for all event
+ # assignment, instead of using the generic propagate
+ # flag.
subject.dispatch._listen(subject, ident,
- fn, raw, propagate)
+ fn, raw=raw,
+ propagate=False)
class _InstanceEventsHold(_EventsHold):