AutocompleteListFilter Options

[Bash4195]

Is it possible to pass filtering options to AutocompleteListFilter?

For example, I want to filter by admins and I have their role set as a field in the model, I'd just need to pass that to the filter somehow.

If this isn't possible, it'd be a great feature for the future!

[julianwachholz]

Great idea! I had a quick look and unfortunately it doesn't look like it's easily achieved.
The Django internal AutocompleteJsonView only uses search_fields defined on the model's ModelAdmin and doesn't accept any of the filtering URL parameters that are available on regular changelist views (maybe we could propose a change to Django?).

One possible workaround is overwriting the get_search_results() method on your ModelAdmin for the model you want to look up. However, this will affect your normal search on the model admin as well. To circumvent this, one can also create a proxy model and register a separate ModelAdmin just for the filtered objects:

class SuperUser(User):
    """Proxy model is only needed to register a second admin for the same model."""
    class Meta:
        proxy = True


@admin.register(SuperUser)
class SuperUserAdmin(admin.ModelAdmin):
    model = SuperUser

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        return qs.filter(is_superuser=True)

But then your model you want to filter must have a foreign key to the proxy model instead:

class MyModel(models.Model):
    # does not actually filter to only super users
    user = models.ForeignKey(to=SuperUser, on_delete=models.PROTECT)