def setProp(self, new_prop, exclusive=True): if exclusive: self.props = [p for p if p.typ != new_prop.typ] self.props.append(new_prop)
o = MappedObject() o.setProp(Prop(typ='a', val='b') o.setProp(Prop(typ='b', val='c') MappedObject has a simple relation() for Prop. at flush() time, the prop for (typ='b') is saved, but the one for (typ='a') throws an error on the database insert saying that table.foreignkey is null On Jan 17, 2008 6:59 PM, jason kirtland <[EMAIL PROTECTED]> wrote: > > Rick Morrison wrote: > > I'm having trouble with the instrumented lists used for relation > > collections: > > > > > > def setProp(self, new_prop, exclusive=True): > > self.props = [p for p if p.typ != new_prop.typ] > > self.props.append(new_prop) > > > > so if 'props' is a relation on some mapped class, and I try > > C.setProp(newprop), then a later flush() fails when it tries to write a > > null FK in the properties table. > > > > I suspect it's the list comprehension when there's items in there that > > haven't been flushed yet. > > What's the real code doing? That doesn't parse,.. > > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---