About Populating the DateField Value For Fields with auto_now_add
In order to set a value for a DateField field with auto_now_add attribute, you'll have to update the entry with the QuerySet's update() method after creating it:
for author in Author.objects.all():
person = Person.objects.create(
first_name=author.first_name,
last_name=author.last_name,
)
Person.objects.filter(pk=person.pk).update(
created_at=author.created_at,
)
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