On Apr 17, 2008, at 5:51 PM, jean-philippe dutreve wrote:
>
> class AccountLoader(MapperExtension):
> def append_result(self, mapper, selectcontext, row, instance,
> result, **flags):
> isnew = flags.get('isnew', False)
> if instance.parent_id is None:
> result.append(instance)
> else:
> if isnew or selectcontext.populate_existing:
> key =
> mapper.identity_key_from_primary_key(instance.parent_id)
> parentnode = selectcontext.session.identity_map[key]
> parentnode.children.append(instance)
> return False
>
> accounts = Session.query(Account).filter(Account.c.chart_id==1).all()
i cant see any problem from what I see here. The example script
definitely works and append_result is called, so just try to see
what's different here vs. that script, and try stepping through with
pdb for more detail. If all else fails, send along a full reproducing
test case.
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