python - How do I clone a Django model instance object and save it to the database?

Question

Foo.objects.get(pk="foo")
<Foo: test>

In the database, I want to add another object which is a copy of the object above.

Suppose my table has one row. I want to insert the first row object into another row with a different primary key. How can I do that?

Answer 1

Just change the primary key of your object and run save().

obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()

If you want auto-generated key, set the new key to None.

More on UPDATE/INSERT here.

Official docs on copying model instances: https://docs.djangoproject.com/en/2.2/topics/db/queries/#copying-model-instances