Check out the docs about many-to-many relationships. The link below talks exactly about what you are asking.
http://www.djangoproject.com/documentation/db_api/#many-to-many- relations On Mar 18, 2006, at 8:05 AM, Ned Batchelder wrote: > > I want to select objects based on their relationships with related > objects, but I don't seem to be able to do it, because I'm trying > to use > a foreign key in the "wrong" direction. For example, in the Polls and > Choices model, I can do this (from the docs): > > choices.get_list(poll__slug__exact="eggs") > > This works because the Choice class has a poll ForeignKey. But I > can't > get a list of polls based on the characteristics of choices: > > polls.get_list(choice__choice__exact="overeasy") # Doesn't work. > > Am I wrong? Please tell me there is a way to accomplish what I want. > This is all in .91. I can manage it with trapdoor params like where=: > > polls.get_list(where=["id in (SELECT poll_id FROM app_choices where > choice='overeasy')"]) > > Or something like that, I'm backtranslating from my real app. Is > there > a cleaner way? > > Thanks. > > --Ned. > > -- > Ned Batchelder, http://nedbatchelder.com > > --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users -~----------~----~----~----~------~----~------~--~---
