{"blog_title":"\u30c4\u30e6\u30c0\u30af\u306e\u8089\u5897\u3057\u306eRuby on Rails\u306e\u521d\u5fc3\u8005\u3067","categories":["Ruby"],"author_url":"https://blog.hatena.ne.jp/jiikko/","title":"Rubyist\u30d3\u30ae\u30ca\u30fc\u304c\u6700\u8fd1Ruby\u3092\u66f8\u3044\u3066\u3066\u601d\u3063\u305f\u3053\u3068","height":"190","author_name":"jiikko","provider_url":"https://hatena.blog","published":"2013-05-22 23:46:57","width":"100%","blog_url":"https://jiikko.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fjiikko.hatenadiary.org%2Fentry%2F20130522%2F1369234017\" title=\"Rubyist\u30d3\u30ae\u30ca\u30fc\u304c\u6700\u8fd1Ruby\u3092\u66f8\u3044\u3066\u3066\u601d\u3063\u305f\u3053\u3068 - \u30c4\u30e6\u30c0\u30af\u306e\u8089\u5897\u3057\u306eRuby on Rails\u306e\u521d\u5fc3\u8005\u3067\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","version":"1.0","image_url":null,"type":"rich","url":"https://jiikko.hatenadiary.org/entry/20130522/1369234017","description":"Ruby\u3001\u3069\u3093\u306a\u306b\u6c5a\u304f\u3066\u3082\u52d5\u304f\u3051\u3069\u3001\u7fcc\u65e5\u305d\u306e\u66f8\u3044\u305f\u30b3\u30fc\u30c9\u3092\u898b\u308b\u3068\u7406\u89e3\u3059\u308b\u307e\u3067\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308b\u3002 \u305f\u3076\u3093\u3053\u308c\u3063\u3066\u53ef\u8aad\u6027\u304c\u306a\u3044\u304b\u3089\u3002 \u30b3\u30fc\u30c9\u306e\u6d88\u8cbb\u671f\u9650\u3092\u3042\u3052\u308b\u305f\u3081\u3068\u304b\u6700\u8fd1\u81ea\u5206\u304c\u610f\u8b58\u3057\u3066\u3044\u308b\u3053\u3068 \u9069\u5207\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046 \u30a4\u30c6\u30ec\u30fc\u30bf\u306f\u3001\u8ad6\u7406\u5224\u5b9a\u3068\u304b\u3050\u3061\u3083\u3063\u3068\u66f8\u3051\u3070\u5272\u3068\u30e1\u30bd\u30c3\u30c9\u306e\u7a2e\u985e\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u66f8\u3051\u308b\u3002\u3067\u3082\u3053\u308c\u3060\u3068\u53ef\u8aad\u6027\u304c\u606f\u3057\u3066\u306a\u3044\u3002 \u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u308a\u9664\u304d\u305f\u3044\u5834\u5408\u306freject\u3002\u30ec\u30b3\u30fc\u30c9\u3092\u9078\u3073\u305f\u3044\u6642\u306fselect\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u914d\u5217\u3092\u4f5c\u308a\u305f\u3044\u6642\u306fpluck\u3002\u3068\u304b\u4f7f\u3044\u5206\u3051\u308b\u3002 Word.all.map{ |v| v.id } \u2193 Wod.pluck(:id) \u3068\u304b\u3002 \u9069\u5207\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u66f8\u3044\u3066\u3044\u3051\u2026"}