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I know that in Rails all ActiveRecord callbacks are executed inside transaction. So if something goes wrong nothing is changed/wrong. Will Mongoid gem handle this in the same way (no transactions available as far as I know)?
Thx!
There’s no such thing as a transaction in mongodb, so no this won’t be handled for you. Should something blow up in an
after_saveor something like that you’ll need to fix the damage yourself.The general approach (as the FAQ hints at) is to try and design around this by using mongo’s atomic modifiers.