{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fparanishian.hateblo.jp%2Fentry%2F2016%2F03%2F17%2F154214\" title=\"with_options\u3092\u4f7f\u3046\u969b\u306e\u6ce8\u610f\u70b9 - paranitips\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","author_name":"paranishian","blog_title":"paranitips","url":"https://paranishian.hateblo.jp/entry/2016/03/17/154214","provider_name":"Hatena Blog","version":"1.0","image_url":null,"author_url":"https://blog.hatena.ne.jp/paranishian/","published":"2016-03-17 15:42:14","title":"with_options\u3092\u4f7f\u3046\u969b\u306e\u6ce8\u610f\u70b9","blog_url":"https://paranishian.hateblo.jp/","categories":["\u958b\u767a"],"provider_url":"https://hatena.blog","type":"rich","description":"\u74b0\u5883 Rails\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f4.1\u3067\u3059\u3002 $ rails -v Rails 4.1.1 \u305d\u3082\u305d\u3082with_options\u3063\u3066\uff1f \u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u8a18\u8ff0\u304c\u5197\u9577\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u307e\u3068\u3081\u3066\u304f\u308c\u308b\u4fbf\u5229\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002 class User < ActiveRecord::Base validate :name, presence: true, if: :hoge validate :address, presence: true, if: :hoge validate :email, presence: true, if: :hoge end \u4f8b\u3048\u3070\u4e0a\u8a18\u306f\u3053\u3046\u66f8\u3051\u307e\u3059\u3002 class User < Active\u2026","width":"100%"}