Tuesday, September 4, 2012

Does ``QuerySet.select_for_update`` lock related (joined) rows as well?

restaurant = Restaurant.objects.select_for_update().select_related('owner').get(name=u'Koala Kafe')

Assuming the ``owner`` field points to a ``Person`` table, will the aforementioned query prevent the ``Person`` row returned for the Koala Kafe's owner from being saved in a separate transaction?

(I will be using Postgres and using ``transaction.commit_on_success``)

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