Since joining is not allowed on "delete" queries in Peewee, what is the best way to delete all records in table_2 that match a specific condition in related table_1?
Using a simple example, I want to achieve the equivalent of this:
JOIN user ON message.from_user_id = user.id
WHERE user.name = "Joe";
You should use subqueries for this type of thing, e.g.:
joe = User.select().where(User.username == 'Joe') Message.delete().where(Message.from_user == joe).execute()
Let's say you want to delete all messages from "banned" users. You could write:
banned_users = User.select().where(User.is_banned == True) Message.delete().where(Message.user.in_(banned_users)).execute()