Django bulk get_or_create manager

bulk_get_or_create.py

from django.db import models


class BulkGetOrCreateManager(models.Manager):
    def bulk_get_or_create(self, objs, lookup_field=None):
        assert lookup_field, "Not set 'lookup_field' for 'bulk_get_or_create'"

        lookup = {f'{lookup_field}__in': objs}
        existing_objects = [
            obj for obj in self.get_queryset().filter(**lookup)
        ]
        non_existing_objects = [
            obj for obj in objs if obj not in existing_objects
        ]
        self.bulk_create(non_existing_objects, batch_size=999)

        return super().get_queryset().filter(**lookup)

This manager seemed to not be working properly. Here is mine slightly modified version:

class BulkGetOrCreateManager(models.Manager):
    def bulk_get_or_create(self, objs, lookup_field=None):
        assert lookup_field, "Not set 'lookup_field' for 'bulk_get_or_create'"

        lookup = {f'{lookup_field}__in': [getattr(obj, lookup_field) for obj in objs]}
        existing_objects = [
            obj for obj in self.get_queryset().filter(**lookup)
        ]
        existing_object_lookup_fields = [getattr(obj, lookup_field) for obj in existing_objects]
        non_existing_objects = [
            obj for obj in objs if getattr(obj, lookup_field) not in existing_object_lookup_fields
        ]
        self.bulk_create(non_existing_objects, batch_size=999)

        return super().get_queryset().filter(**lookup)

This manager seemed to not be working properly. Here is mine slightly modified version:

class BulkGetOrCreateManager(models.Manager):
    def bulk_get_or_create(self, objs, lookup_field=None):
        assert lookup_field, "Not set 'lookup_field' for 'bulk_get_or_create'"

        lookup = {f'{lookup_field}__in': [getattr(obj, lookup_field) for obj in objs]}
        existing_objects = [
            obj for obj in self.get_queryset().filter(**lookup)
        ]
        existing_object_lookup_fields = [getattr(obj, lookup_field) for obj in existing_objects]
        non_existing_objects = [
            obj for obj in objs if getattr(obj, lookup_field) not in existing_object_lookup_fields
        ]
        self.bulk_create(non_existing_objects, batch_size=999)

        return super().get_queryset().filter(**lookup)

It's look like true. Thanks you so much)