{"height":"190","width":"100%","version":"1.0","author_url":"https://blog.hatena.ne.jp/ayaketan/","title":"\u5fc5\u8981\u306a\u30ab\u30e9\u30e0\u306e\u5024\u3092\u914d\u5217\u3067\u53d6\u5f97\u3059\u308b\u65b9\u6cd5","published":"2013-09-02 17:36:43","type":"rich","provider_name":"Hatena Blog","categories":["Ruby"],"blog_title":"ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayaketan.hatenablog.com%2Fentry%2F2013%2F09%2F02%2F173643\" title=\"\u5fc5\u8981\u306a\u30ab\u30e9\u30e0\u306e\u5024\u3092\u914d\u5217\u3067\u53d6\u5f97\u3059\u308b\u65b9\u6cd5 - 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,"description":"\u5fc5\u8981\u306a\u30ab\u30e9\u30e0\u306e\u5024\u3092\u914d\u5217\u3067\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3092\u30e1\u30e2\u3002Users\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30b0\u30eb\u30fc\u30d7\uff29\uff24\u304c2\u306e\u30e6\u30fc\u30b6\u30fc\uff29\uff24\u3092\u914d\u5217\u3067\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8a18\u8f09\u3059\u308b\u3002 user_ids = User.select(:id).where(:group_id => 2).map(&:id) \u4e0d\u52d5\u7523\u306b\u8208\u5473\u3092\u6301\u3061\u59cb\u3081\u305f\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30e1\u30e2\u5e33|\u3010Ruby\u3011ActiveRecord\u306eSELECT\u7d50\u679c\u306e\u5fc5\u8981\u306a\u5c5e\u6027\u3060\u3051\u3092\u3055\u3063\u304f\u308a\u914d\u5217\u3067\u53d7\u3051\u53d6\u308b\u65b9\u6cd5","provider_url":"https://hatena.blog","blog_url":"https://ayaketan.hatenablog.com/","author_name":"ayaketan","url":"https://ayaketan.hatenablog.com/entry/2013/09/02/173643"}