{"author_url":"https://blog.hatena.ne.jp/t-imaizumi/","published":"2006-08-14 00:02:56","version":"1.0","width":"100%","url":"https://t-imaizumi.hatenadiary.org/entry/20060814/1155567776","image_url":"http://static.flickr.com/69/215087795_abfb47146c.jpg","categories":["Ruby","RoR"],"author_name":"t-imaizumi","description":"\u307e\u305a\u306f\u4f55\u51e6\u306b\u66f8\u304f\u304b\u3063\u3066\u3044\u3046\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u30e2\u30c7\u30eb\u5074\u3067\u30c1\u30a7\u30c3\u30af\u3092\u3059\u308b\u3068\u306e\u3053\u3068\u3067\u3001app/models/\u30e2\u30c7\u30eb\u540d.rb\u3092\u7de8\u96c6\u3059\u308b\u3002 class Schedule < ActiveRecord::Base def validate unless attribute_present?('title') errors.add('title', '\u5165\u529b\u3055\u308c\u3066\u3044\u307e\u305b\u3093') end end end\u3053\u3093\u306a\u611f\u3058\u3002 \u3053\u3053\u3067\u306f\u5358\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3092\u884c\u3046\u3060\u3051\u3067\u3001\u306b\u5b9f\u884c\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u306a\u3044\u3002\u30c7\u30fc\u30bf\u4fdd\u5b58\u6642\u306b\u81ea\u52d5\u3067\u547c\u3070\u308c\u308b\u3089\u3057\u3044\u3002 validate\u30e1\u30bd\u30c3\u30c9\u4ee5\u5916\u306b\u306fvalidate_on_create\u3001validate\u2026","blog_title":"t-imaizumi\u306eMac\u3068\u304b\u306e\u306f\u306a\u3057","provider_name":"Hatena Blog","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ft-imaizumi.hatenadiary.org%2Fentry%2F20060814%2F1155567776\" title=\"\u5165\u529b\u5185\u5bb9\u306e\u30c1\u30a7\u30c3\u30af\u3002 - t-imaizumi\u306eMac\u3068\u304b\u306e\u306f\u306a\u3057\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://t-imaizumi.hatenadiary.org/","type":"rich","title":"\u5165\u529b\u5185\u5bb9\u306e\u30c1\u30a7\u30c3\u30af\u3002","provider_url":"https://hatena.blog"}