How are observers and callbacks different from each other?
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Answer / Ashok Kumar Yadav
In Ruby on Rails, Observers are classes that observe Active Record models and respond to specific events (e.g., before_save or after_create). Callbacks, on the other hand, are methods defined within a model that are called automatically during certain events in the life cycle of the object (e.g., `before_save` callback method within a model). Observers can be used to perform tasks across multiple models, while callbacks are specific to one model.
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