Django "update_or_create" API: how to filter objects by created or updated?

Question

So, I'm using the Django update_or_create API to build my form data. It works fine...but, once built, I need a way to check to see what profiles were actually updated or if they were created for the first time?

Just an example:

    for people in peoples:
        people, updated = People.objects.update_or_create(
            id=people.person_id,
            defaults={
                'first_name': people.first_name,
            }
        )

Filtering queryset:

   people = People.objects.filter(
        id__in=whatever,
   )

But, now, I'm trying to filter the queryset by created or updated...but don't see an API for that (e.g., a fitler of sorts)

So, I would like to do something like:

updated = Person.objects.filter(updated=True, created_for_first_time=False)

and then I can write something like

if updated:
   do this
else:
   do this

Basically, I just want to check if a profile was updated or created for the first time.

Answer 1

As you have shown in your question, the update_or_create method returns a tuple (obj, created), where obj in the object, and created is a boolean showing whether a new object was created.

You could check the value of the boolean field, and create a list to store the ids of the newly created objects

new_objects = []
for people in peoples:
    obj, created = People.objects.update_or_create(...)
    if created:
        new_objects.append(obj.id)

You can then filter using that list:

new_people = People.objects.filter(id__in=new_objects)
existing_people = People.objects.exclude(id__in=new_objects)