Many many thanks for the response.
I had tried that approach, but had no idea what was coming through in
kwargs. I feel like 'kwargs' on most class objects needs more
thorough documentation for the general users who refer primarily to
the on-site docs. Even digging through some code, I simply had no
idea.
This should provide a working fix for the sort of filtering I need to
do. I hope that maybe I or some other person can provide some code to
help simplify this amazingly common dilemma. Any models that group in
logical relationships of 3 seem to always have this problem, and I'd
love to have a simpler fix to write off in the docs.
Tim
On Oct 25, 8:28 pm, Matt Schinckel <matt.schinc...@gmail.com> wrote:
> On Oct 24, 5:14 am, Tim Valenta <tonightslasts...@gmail.com> wrote:
>
> > 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.
>
> [snip]
>
> > 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.
>
> [snip]
>
> > 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.
>
> I too spent some time looking at formfield_for_foreignkey, and had no
> luck.
>
> You can subclass ModelAdmin, and then limit the objects in the field's
> queryset.
>
> ** admin.py **
>
> class LocationAdminForm(forms.ModelForm):
> def __init__(self, *args, **kwargs):
> forms.ModelForm.__init__(self, *args, **kwargs)
> location = kwargs.get('instance', None)
> if location:
> self.fields['contract'].queryset = Contract.objects.filter
> (company=location.company)
>
> class LocationAdmin(admin.ModelAdmin):
> model = Location
> form = LocationAdminForm
>
> I also had to do something similar with Inlines, when I did the same
> type of thing. This is not my exact code, but it is very close, and
> suited toward your use case.
>
> Matt.
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
