{"provider_url":"https://hatena.blog","image_url":null,"categories":["Ruby","Rails"],"title":"Array\u306e\u5c55\u958b\u30d8(^o^)\u30ce","version":"1.0","blog_title":"Murajun's Style","url":"https://murajun1978.hatenadiary.com/entry/2014/09/09/204615","width":"100%","author_url":"https://blog.hatena.ne.jp/murajun1978/","published":"2014-09-09 20:46:15","blog_url":"https://murajun1978.hatenadiary.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmurajun1978.hatenadiary.com%2Fentry%2F2014%2F09%2F09%2F204615\" title=\"Array\u306e\u5c55\u958b\u30d8(^o^)\u30ce - Murajun&#39;s Style\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"Rails4\u304b\u3089pluck\u304c\u8907\u6570\u30ab\u30e9\u30e0\u306b\u5bfe\u5fdc\u3057\u307e\u3057\u305f\u306d\u30fc \u3053\u3093\u306a\u611f\u3058\u3067\u3001\u7279\u5b9a\u30ab\u30e9\u30e0\u306e\u5024\u304c\u914d\u5217\u3067\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 Post.pluck(:title, :description) # => [[\"Murajun's Style\", \"Array\u306e\u5c55\u958b\u30d8(^o^)\u30ce\"]] \u3068\u3063\u3066\u3082\u4fbf\u5229\u3067\u3059\u3088\u306d\u30fc \u3093\u3058\u3083\u3001\u30ab\u30e9\u30e0\u3092\u52d5\u7684\u306b\u53d6\u5f97\u3057\u305f\u3044\u3067\u3059\u3088\u306d\uff1f\uff08\u3057\u305f\u3044\u3088\u306d\uff1fw \u3053\u3093\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u4f5c\u308a\u307e\u3057\u305f\u30fc def columns_value(*columns) Post.pluck(columns) end \u3067\u3082\u3001\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u6012\u3089\u308c\u307e\u3059\u3002 pluck\u306e\u5f15\u6570columns\u304cArray\u3060\u304b\u3089\u3067\u3059\u3002 \u3064\u307e\u308a\u306f\u3053\u3046\u3044\u3046\u72b6\u614b\u3002\u3002\u2026","type":"rich","author_name":"murajun1978","height":"190","provider_name":"Hatena Blog"}