Django : Filter query based on custom function

Question

I\'ve got a function built into my Django model class and I want to use that function to filter my query results.

  class service:
       ......
       def i         


        

Answer 1

I just had a similar issue. The problem was i had to return a QuerySet instance. A quick solution for me was to do something like:

active_serv_ids = [service.id for service in Service.objects.all() if service.is_active()]
nserv = Service.objects.filter(id__in=active_serv_ids)

pretty sure this is not the prettiest and performant way to do this, but i works for me.

a more verbose way of doing this would be:

active_serv_ids = []

for service in Service.objects.all():
if service.is_active():
    active_serv_ids.append(service.id)

nserv = Service.objects.filter(id__in=active_serv_ids)