basically you would have to make a ManyToMany relation thru a class. In that class you make m,n,date field After that you just use a query to answer the question: Who (Paul)? joined to whom (Beatles), and after that will pop up the ManyToMany date field that will answer to question "when".
I am preety new in django my self .. and i don't know pretty well how to do it... On Mon, Sep 14, 2009 at 6:21 PM, W.P. McNeill <bill...@gmail.com> wrote: > > I can't figure out how to query the values of fields in a ManyToMany > "through" table. > > For instance, say I'm working with the Beatles database in the Django > documentation (http://docs.djangoproject.com/en/dev/topics/db/models/ > #extra-fields-on-many-to-many-relationships<http://docs.djangoproject.com/en/dev/topics/db/models/%0A#extra-fields-on-many-to-many-relationships>). > I want to be able to > query the date on which Paul joined the Beatles. (As opposed to when > Ringo joined the Beatles, or when Paul joined Wings.) Basically I > want to treat the Group table as a two-dimensional array, look up: > > Group[Beatles][Paul].date_joined > > and have it return: > > date(1960, 8, 1) > > I'd think this would be easy to do, but I've been playing around with > the command-line database API and I can't figure it out. The > documentation I've seen describes how to use a Membership field as a > filter criteria, but not how to look up the actual value. > > > -- As programmers create bigger & better idiot proof programs, so the universe creates bigger & better idiots! I am on web: http://www.alecslupu.ro/ I am on twitter: http://twitter.com/alecslupu I am on linkedIn: http://www.linkedin.com/in/alecslupu Tel: (+4)0748.543.798 --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
