{"width":"100%","version":"1.0","blog_url":"https://ayaketan.hatenablog.com/","published":"2013-12-02 12:32:54","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayaketan.hatenablog.com%2Fentry%2F2013%2F12%2F02%2F123254\" title=\"Rails4 validates\u3067\u6574\u6570\u3068nil\u306e\u307f\u8a31\u53ef\u3059\u308b - ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"author_name":"ayaketan","type":"rich","height":"190","blog_title":"ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18","categories":["Ruby"],"title":"Rails4 validates\u3067\u6574\u6570\u3068nil\u306e\u307f\u8a31\u53ef\u3059\u308b","url":"https://ayaketan.hatenablog.com/entry/2013/12/02/123254","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/ayaketan/","description":"\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3067\u6574\u6570\u306e\u307f\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306f\u591a\u304b\u3063\u305f\u304c\u3001nil\u3082\u8a31\u53ef\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u72b6\u6cc1\u306b\u306a\u3063\u305f\u3002\u8abf\u3079\u3066\u307f\u308b\u3068\u3001allow_nil\u3067\u8a2d\u5b9a\u3067\u304d\u308b\u3088\u3046\u3060\u3002\u305f\u3068\u3048\u3070\u3001number\u306b\u6574\u6570\u3068nil\u306e\u307f\u8a31\u53ef\u3059\u308b\u306b\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8a18\u8f09\u3059\u308b\u3002 validates :number, :numericality => {:only_integer => true, :allow_nil => true} \u53c2\u8003\uff1a [Ruby on Rails] validates numericality \u3067 nil \u306f\u30c1\u30a7\u30c3\u30af\u3057\u306a\u3044\u65b9\u6cd5 | CodeNote.net"}