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Is it possible to find out what exactly has changed with the help of an observer in a ruby ​​on rails?

I need to send an email notification when the price of the product changes. Is it possible to do this with help ActiveRecord::Observeror do I need to use the programming logic in the edit form?

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You can use Dirty Objects to achieve this, in this particular case you will have something similar in your observer.

FooMailer.deliver_alert(foo) if foo.price_changed?

: " ". save prince_changed?.

, .

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Source: https://habr.com/ru/post/1755788/

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