On Dec 7, 2011, at 11:08 PM, kris wrote: > Hmm, I think I want the opposite behavior. I was the defualt mapper to > Resource unless a more specific mapper has been defined. > I never defined a 'C' or 'D' and I would like simple get a Resource when no > better mapper is found. > i.e. I get Resource class for C, D and get a Resource_A for A and a > Resource_B for B. > > Is this possible?
So you're looking for a row that has "C" or "D" in it to act as though it were "default". As an easy feature, that is ticket #2238 set on the 0.8 milestone. the workaround for now is to use column_property() in conjunction with a case() statement, I've posted the recipe for that at http://www.sqlalchemy.org/trac/wiki/UsageRecipes/CaseBasedPolymorphicOn . It will work in 0.7.3 but not in the current tip as there is a bug preventing it from working. > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sqlalchemy/-/FHmjireFL_EJ. > 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. -- 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.
