select_for_update in development Django

Question

The Django documentation states that:

If you were relying on “automatic transactions” to provide locking between select_for_update() and a subsequen

Answer 1

select_for_update will only lock the selected row within the context of a single transaction. If you're using autocommit, it won't do what you think it does, because each query will effectively be its own transaction (including the SELECT ... FOR UPDATE query). Wrap your view (or other function) in transaction.atomic and it'll do exactly what you're expecting it to do.