{"author_url":"https://blog.hatena.ne.jp/babiy3104/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbabiy3104.hateblo.jp%2Fentry%2F2014%2F02%2F22%2F152341\" title=\"rails - has_many through: - \u305d\u3046\u3044\u3046\u3053\u3068\u3060\u3063\u305f\u3093\u3067\u3059\u306d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://babiy3104.hateblo.jp/entry/2014/02/22/152341","title":"rails - has_many through:","categories":["Rails","Ruby"],"description":"\u4ed6\u5bfe\u4ed6 \u306e\u95a2\u9023\u3092\u53c2\u7167\u3059\u308b \u5143\u3005\u306f\u4ed6\u5bfe\u4ed6\u3092\u76f4\u63a5\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3082\u306e\u3002 +-------+ +-----------+ +-----+ |Product| 1---n |OrderDetail| n---1 |Order| +-------+ +-----------+ +-----+\u4f8b\u3048\u3070\u3001\u7279\u5b9a\u306e Order\u4e2d\u306e Product\u3092\u8abf\u3079\u305f\u3044\u5834\u5408\u306a\u3069\u3002 class Product < ActiveRecord::Base has_many :order_details has_many :orders, through: :order_details end class Order < Acti\u2026","published":"2014-02-22 15:23:41","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","height":"190","width":"100%","blog_title":"\u305d\u3046\u3044\u3046\u3053\u3068\u3060\u3063\u305f\u3093\u3067\u3059\u306d","image_url":null,"author_name":"babiy3104","blog_url":"https://babiy3104.hateblo.jp/","type":"rich","version":"1.0"}