Fixed #30138 -- Changed QuerySet.bulk_create() to set pk of created objects when ignore_conflicts=True.

[hramezani]

Ticket 30138
Continue to The PR

[charettes]

I'm not sure I understand how this will work.

Say that you have the following objects existing

TwoFields.objects.create(f1=1, f2=1)
TwoFields.objects.create(f1=3, f2=3)

And then you do a

TwoFields.objects.bulk_create([
    TwoFields(f1=1, f2=1),
    TwoFields(f1=2, f2=2),
    TwoFields(f1=3, f2=3),
], ignore_conflicts=True)

From my understanding the database will not return any conflicting row ids which means you'll have a mismatch between the number of returned ids and the number of objects passed to bulk_create and won't be able to assign the proper values.

[hramezani]

@charettes Yes, you are right the database will not return any conflicting row ids.

Based on the Ticket and last PR it seems we need to add newly created item id to the results. Is there any way to match the number of returned ids and the number of objects passed to bulk_create?
If something else is in your mind please share it with me. I can work on it.