diff options
Diffstat (limited to 'lib/sqlalchemy/orm/events.py')
| -rw-r--r-- | lib/sqlalchemy/orm/events.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/sqlalchemy/orm/events.py b/lib/sqlalchemy/orm/events.py index fc8cab2ed..b610408b7 100644 --- a/lib/sqlalchemy/orm/events.py +++ b/lib/sqlalchemy/orm/events.py @@ -783,9 +783,12 @@ class AttributeEvents(event.Events): Several modifiers are available to the :func:`~.event.listen` function. :param active_history=False: When True, indicates that the - "on_set" event would like to receive the "old" value - being replaced unconditionally, even if this requires - firing off database loads. + "on_set" event would like to receive the "old" value being + replaced unconditionally, even if this requires firing off + database loads. Note that ``active_history`` can also be + set directly via :func:`.column_property` and + :func:`.relationship`. + :param propagate=False: When True, the listener function will be established not just for the class attribute given, but for attributes of the same name on all current subclasses |