How to extend queryset in Django with fields from associated model?

Question

Django

I get the main queryset like this:

panel_list = dir_service_subtype.objects.filter(id=39).first().client_bind_set.first().csstate_set.all()

And I'm trying to expand it with this:

user = CsState.objects.first().client_bind.client_bind_post_set.filter(
    is_active=1,
    planned_begin_date__lte=datetime.now(),
    planned_end_date__gte=datetime.now())\
    .first()

Is it possible?

Answer 1

obj = Model.filter(params).first()
if obj is None: