{"author_url":"https://blog.hatena.ne.jp/aereal/","title":"","description":"Sometimes though, you either don't need the extra safety you get from dm-validations, or you don't want any callbacks to be invoked at all. In situations like this, you can use the bang(!) versions of the respective methods. DataMapper - Create, Save, Update and Destroy ActiveRecord \u3068\u540c\u3058\u3060\u3068\u52d8\u9055\u3044\u3057\u3066 save!\u2026","url":"https://d.aereal.org/entry/20130815/1376533713","provider_url":"https://hatena.blog","blog_title":"\u300e\u8a00\u8449\u3092\u5410\u304f\u300f","image_url":null,"provider_name":"Hatena Blog","type":"rich","blog_url":"https://d.aereal.org/","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fd.aereal.org%2Fentry%2F20130815%2F1376533713\" title=\" - \u300e\u8a00\u8449\u3092\u5410\u304f\u300f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2013-08-15 11:28:33","author_name":"aereal","version":"1.0","categories":[],"width":"100%"}