You can, it just creates headaches. At least one of the ForeignKeys needs to not be required (I believe that's the default anyway).
On Wed, Aug 19, 2009 at 1:27 PM, ringemup <ringe...@gmail.com> wrote: > > > Is having two classes that reference one another just simply something > that can't be done in Python? > > > On Aug 19, 4:36 am, Joshua Russo <josh.r.ru...@gmail.com> wrote: > > On Tue, Aug 18, 2009 at 11:04 PM, ringemup <ringe...@gmail.com> wrote: > > > > > Well, I'm trying to implement parent / child aliases, but I'm running > > > into problems with class declaration order because I need to reference > > > the Alias class from within the Account class as well as referencing > > > Account from Alias for validation purposes -- and not just in > > > ForeignKey declarations and such. > > > > > Since one will always have to be declared before the other, is there > > > any way to do this? > > > > What I would recommend is to drop the ForeignKey in the Account table. > You > > can always retrieve the set of Aliases for an Account based on the > > ForeignKey from Alias to Account. I believe that you will even be able to > > access Account.alias_set in your code, though if not you can always get > > Alias.objects.filter(Account_id=xx) and for the primary you will be able > to > > say either Account.alias_set.filter(parent__isnull=True)or > > Alias.objects.filter(Account_id=xx).filter(parent__isnull=True) > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
