Tefnet Developers wrote: > > SteveBallmer = Employee(name = 'Steve Ballmer') > CraigMundie = Employee(name = 'Craig Mundie') > BillGates = Employee(name = 'Bill Gates') > > CraigMundie.manager = BillGates > SteveBallmer.subordinates = [CraigMundie] > > print "CraigMundie.manager: %s" % (CraigMundie.manager) > > # Why does CraigMundie appear here? > # after SteveBallmer.subordinates = [CraigMundie] > # CraigMundie.manager should be set to SteveBallmer so > # CraigMundie should not be present in BillGates.subordinates > print "BillGates.subordinates: %s" % (BillGates.subordinates) > print "SteveBallmer.subordinates: %s" % (SteveBallmer.subordinates) > > > Is this a SQLAlchemy bug or my mistake?
Backrefs deal with the two-way relation between A<->B, but the event does not propagate in most cases to C or beyond, i.e. A<->B<->C where B is attached to A would indicate C->B becomes detached in memory. After a commit() all those references would be expired and then you'd see the actual connections. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
