I've been searching for a while on how to intercept querysets in forms, to apply a custom filter to the choices on both foreignkey and m2m widgets. I'm surprised at how there are so many similar questions out there, dating back to 2006.
I came across the documentation for ModelAdmin.formfield_for_foreignkey (http://docs.djangoproject.com/en/ dev/ref/contrib/admin/ #django.contrib.admin.ModelAdmin.formfield_for_foreignkey), and thought I had a perfect solution, but the method doesn't seem to entirely fit the hole I'm trying to fill. Consider these models: # models.py class Company(models.Model): # ... class Contract(models.Model): company = models.ForeignKey(Company) locations = models.ManyToManyField('Location') class Location(models.Model): company = models.ForeignKey(Company) So, Company is at the top of the hierarchy, with both Contract and Location holding foreign keys to Company, and then Contract and Location share an m2m relationship. The admin presents this data so that the m2m widget on Contract lets you pick from any Location in the database. Arguably, there should be an option for the implied common relationship to take effect, of both Contract and Location to Company. The only solution I've seen has dealt with filtering by User foreign key (being that User is available in the request object in views), and that's primarily for non-Admin views. I've been looking at the code for the above noted API method, formfield_for_foreignkey, and I really can't see a way to get references to an instance of the object being edited. I would need such a reference to successfully override that method and filter my queryset on this relationship. Any thoughts? There are dozens of unanswered questions just like this all over popular sites on the internet. We need a solution. The feature list for Django 1.2 does not seem to reference anything on this matter! Tim --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
