On Apr 3, 2008, at 1:43 PM, Michael Bayer wrote:
> > > the opposite. polymorphic_on should only be set on the Event mapper, > and there should not be a discriminator column on the "detection" > table. The base "event" table needs to determine the type in all > cases. The reason for this is because when rows come in for the Event > mapper, it only knows about the "event.discriminator" column - it has > no knowledge that some partcular subclasses should be looking at a > different column. I'll add an assertion case for this now. > eh not that simple re: the assertion case. There's more exotic situations where the "polymorphic_on" is described individually for each mapper, although these are "read only" discriminators. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
