Ruby ActiveRecord 回调

https://guides.rubyonrails.org/active_record_callbacks.html#available-callbacks

3.1 Creating an Object

• before_validation
• after_validation
• before_save
• around_save
• before_create
• around_create
• after_create
• after_save
• after_commit/after_rollback

3.2 Updating an Object

• before_validation
• after_validation
• before_save
• around_save
• before_update
• around_update
• after_update
• after_save
• after_commit/after_rollback

3.3 Destroying an Object

• before_destroy
• around_destroy
• after_destroy
• after_commit/after_rollback