Rails 中 ActiveSupport::Concern 的使用 | 姜咏康的博客

[JiangYongKang]

https://blog.jiangyongkang.com/2017/10/25/Rails-%E4%B8%AD-ActiveSupport-Concern-%E7%9A%84%E4%BD%BF%E7%94%A8/

先观察一下下面两个类 12345678910111213# app/models/accout.rbclass Account < ActiveRecord::Base def message(content) "Message: #{content}" endend# app/models/user.rbclass User < Ac