{"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/nafu003/","description":"u = User.first # Save callbacks\u306e\u4e00\u89a7 u.send('_save_callbacks') # Update callbacks\u306e\u4e00\u89a7 u.send('_update_callbacks') # Create callbacks\u306e\u4e00\u89a7 u.send('_create_callbacks') # Destroy callbacks\u306e\u4e00\u89a7 u.send('_destroy_callbacks') \u3084 class User # include ActiveSupport::Callbacks \u306f\u5b9f\u884c\u6e08\u307f\u3092\u60f3\u5b9a def self.callback_list(name) g\u2026","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnafuruby.hatenablog.com%2Fentry%2F2016%2F11%2F07%2F182642\" title=\" Callbacks\u4e00\u89a7\u3092\u898b\u308b - nafuruby\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"nafu003","blog_title":"nafuruby\u2019s diary","blog_url":"https://nafuruby.hatenablog.com/","width":"100%","version":"1.0","title":" Callbacks\u4e00\u89a7\u3092\u898b\u308b","url":"https://nafuruby.hatenablog.com/entry/2016/11/07/182642","provider_url":"https://hatena.blog","categories":["Rails"],"published":"2016-11-07 18:26:42","type":"rich","height":"190"}