I don't see an easy way to do this offhand. Filtering the ForeignKey queryset using ModelAdmin.formfield_for_foreignkey [1] seems close, but I don't think there's any way to incorporate the values from the M2M field in your filtering. Have you considered writing some JavaScript to do the filtering on the client-side?
[1] https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.formfield_for_foreignkey On Tuesday, November 19, 2013 4:27:41 PM UTC-5, Michal Ludvig wrote: > > On 19/11/13 17:10, Michal Ludvig wrote: > > Hi > > I've got two Django models: Contact and Group, where Group has two fields: > contact and contact_primary linked to Contact. Like this: > > class Group(models.Model): > name = models.CharField(max_length=200) > contacts = models.ManyToManyField(Contact) > contact_primary = models.ForeignKey(Contact) > > In the admin interface I can select a number of Contacts for the contacts > field and then I want to see only these selected contacts in the > contact_primary dropdown. Not necessarily immediately but definitely on > subsequent admin view reloads. As it is now I can see all my Contacts, > whether they're selected in the ManyToMany field or not. > > How can I restrict the Contacts displayed for contact_primary only to > those selected in contacts? > > > Anyone? I don't think it should be too difficult but can't put all the > pieces together. > > In other words what I need is - in the Admin interface there's a drop-down > list for "contact_primary" and a multi-select for "contacts". > > The "contacts" displays Contact.objects.all() - that's good, but so does > "contact_primary" and that's not good. What I only want to display there is > the particular group's group.contacts.all() - i.e. only those Contacts > selected in the multi-select field. I'm sure it must be doable but I don't > know how. > > Do I need a GroupAdmin(admins.ModelAdmin) class and somehow filter it in > there? BTW I don't mind that upon creating a new Group the drop-down for > contact_primary will be empty, I can live with that. > > Any ideas? > > Thanks! > > Michal > > > > > > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/b05b6430-3749-475b-bf28-c02f41a83ab4%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
