This did not end up working as, I think, active_history is by default false. Is there a way in a mapper to set this for all attributes to be True? Its a shame as any AttributeExtension will fix this as they imply True.
On Feb 18, 3:23 pm, Michael Bayer <mike...@zzzcomputing.com> wrote: > get_history() is a public function within the attributes package at > the top level, and I also added API documentation for it recently (not > on the site yet). > > from sqlalchemy.orm.attributes import get_history, instance_state > > get_history(instance_state(myobject), "someattribute") > > in the latest trunk you can pass "myobject" straight to get_history > without using instance_state. > > session.is_modified() just calls get_history() on every attribute, so > you might want to consider just looping through the attributes the way > is_modfied() does and do your history operation inline. > > On Feb 18, 2009, at 9:43 AM, kindly wrote: > > > > > Hello > > > I intend to log any changes (not new rows) to a table. > > > The simplist way I can see to do this is to check every object that is > > "add"ed for changes. I intend to, before every flush, look in "dirty" > > then use is_modified and if there is a change use get_history to find > > out the original and new attribute values. I am wary of doing it this > > way as _sa_instance_state looks private even though get_history is > > not. Should this be safe to use? Or is there a better way? > > > Thanks > > > David --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
