Summary
Active Record provides hooks (called callbacks) into an object's life cycle so that you can control your application and its data.
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Callbacks allow you to trigger logic before or after an alteration of an object's state.
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Callbacks are methods that get called at certain moments of an object's life cycle.
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Active Record Callbacks Callbacks are hooks into the life cycle of an Active Record ... and dependent objects are deleted when ActiveRecord::Base#destroy is ...
ActiveRecord::Callbacks
rubyonrails.org
Summary
Callbacks are methods that get called at certain moments of an object's life cycle. We can use callbacks as a means to manipulate objects further with built-in functionality that Ruby on Rails ships with.
Understanding Active Record Callbacks | Web-Crunch
web-crunch.com
Callbacks are a common way for you to execute code at specific times in the life cycle of an Active Record object, for instance just before it is created, ...
Active Record Callbacks | The Odin Project
theodinproject.com
Active Model Callbacks Provides an interface for any class to have Active Record like callbacks.
ActiveModel::Callbacks
rubyonrails.org
