{"provider_name":"Hatena Blog","url":"https://blog.willnet.in/entry/20090528/1243526403","blog_url":"https://blog.willnet.in/","author_name":"willnet","width":"100%","version":"1.0","blog_title":"\u304a\u3082\u3057\u308dweb\u30b5\u30fc\u30d3\u30b9\u958b\u767a\u65e5\u8a18","categories":["rails"],"published":"2009-05-28 01:00:03","height":"190","type":"rich","title":"has_many\u306a\u30e2\u30c7\u30eb\u306eid\u914d\u5217\u3092\u53d6\u5f97\u3059\u308b\u30b9\u30de\u30fc\u30c8\u306a\u3084\u308a\u65b9","author_url":"https://blog.hatena.ne.jp/willnet/","image_url":null,"provider_url":"https://hatena.blog","description":"\u4eca\u65e5\u305f\u307e\u305f\u307eRails\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u773a\u3081\u3066\u3044\u3066\u898b\u3064\u3051\u305f\u306e\u3067\u3059\u304c\u3002\u4e0b\u8a18\u306e\u3088\u3046\u306aBlog\u30e2\u30c7\u30eb\u3068Entry\u30e2\u30c7\u30eb\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002 class Blog < ActiveRecord::Base has_many :entries end class Entry < ActiveRecord::Base belongs_to :blog end Blog\u30e2\u30c7\u30eb\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b@blog\u306b\u95a2\u9023\u3057\u305fentry\u306eid\u914d\u5217\u3092\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4eca\u307e\u3067\u3053\u3093\u306a\u611f\u3058\u3067\u3084\u3063\u3066\u307e\u3057\u305f\u3002 @blog.entries.find(:all, :select => \"entries.id\").map(&:id) \u3053\u308c\u3067\u3082\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.willnet.in%2Fentry%2F20090528%2F1243526403\" title=\"has_many\u306a\u30e2\u30c7\u30eb\u306eid\u914d\u5217\u3092\u53d6\u5f97\u3059\u308b\u30b9\u30de\u30fc\u30c8\u306a\u3084\u308a\u65b9 - \u304a\u3082\u3057\u308dweb\u30b5\u30fc\u30d3\u30b9\u958b\u767a\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>"}