ActiveModel::Dirty

Active Model Dirty Provides a way to track changes in your object in the same way as Active Record does. The requirements for implementing ActiveModel::Dirty are: include ActiveModel::Dirty in your object. Call define_attribute_methods passing each method you want to track. Call *_will_change! before each change to the tracked attribute. Call changes_applied after the changes are persisted. Call c

[yumainaura]

この手厚さ

[iR3]

ActiveModel::Dirty 使ったことなかったが、Rails5でメソッドが増えたみたい。ステータスの変更周りで使うと良さげという話をしている #sendagayarb

[crist18]

“Active Model Dirty ”

[suginoy]

changedとchanged_attributesの戻り値が自分の期待と逆だ。