Question

Is there are possibility to filter ForeignKeys field query in djano models?
(by default django uses objects.all() i guess).

See the example bellow :

Server -> Conf -> sip_conf -> peer -> context

Server -> ext_conf -> context

The contextFK can be only in list of the context’s_ID which contain in the ext_conf model for the same ServerFK for Conf and ext_conf;

Answer 1

It’s it’s a relative straight-forward limitation, you can use limit_choices_to.

Anything too complicated, you’ll need to override the ModelForm:

class MyModelForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(MyModelForm, self).__init__(*args, **kwargs)

        self.fields['my_fk_field'].queryset = self.fields['my_fk_field'].queryset.filter(...)