Hi Folk, I'm finding difficult implement this features of SA ..... The example is: a simple table with a column "type". I want to do a secondary mapper based on the primary mapper with the only different in the column type='something'
create table person( name text, type text); class Person ( Obj ): pass assign_mapper(context, Person, tbl['person'], column_prefix = 'person_', extension = SelectResultsExt(), properties = { bla bla }) class Blonde( Person ): pass assign_mapper(context, Blonde, select( [tbl['anagrafica']], tbl['anagrafica'].c.tipo == 'P').alias('blonde'), non_primary = True, ) This cause a lot of inspiegable problem to property that are perfecly functional in the primary sqlalchemy.exceptions.ArgumentError: Can't determine relation direction for relationship 'Blabla.comune_nascita (Comune)' - foreign key columns are present in neither the parent nor the child's mapped tables Some ideas? Glauco -- +------------------------------------------------------------+ Glauco Uri - Programmatore glauco(at)allevatori.com Sfera Carta Software(r) [EMAIL PROTECTED] Via Bazzanese,69 Casalecchio di Reno(BO) - Tel. 051591054 +------------------------------------------------------------+ --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---