gestioCOF/kfet/auth/fields.py

from django import forms
from django.contrib.auth.models import Group
from django.forms import widgets

from .models import KFetPermission


class KFetPermissionsField(forms.ModelMultipleChoiceField):
    def __init__(self, *args, **kwargs):
        kwargs.setdefault("queryset", KFetPermission.kfet.all())
        kwargs.setdefault("widget", widgets.CheckboxSelectMultiple)
        super().__init__(*args, **kwargs)

    def label_from_instance(self, obj):
        return obj.name


class KFetGroupsField(forms.ModelMultipleChoiceField):
    def __init__(self, *args, **kwargs):
        kwargs.setdefault("queryset", Group.objects.filter(kfetgroup__isnull=False))
        kwargs.setdefault("widget", widgets.SelectMultiple)
        super().__init__(*args, **kwargs)

    def label_from_instance(self, obj):
        return obj.name