{"width":"100%","published":"2013-09-19 22:16:39","height":"190","url":"https://ayaketan.hatenablog.com/entry/2013/09/19/221639","type":"rich","author_url":"https://blog.hatena.ne.jp/ayaketan/","provider_name":"Hatena Blog","version":"1.0","author_name":"ayaketan","title":"Rails4 \u5916\u90e8\u30ad\u30fc\u540d\u304c\u7570\u306a\u308b\u5834\u5408\u306ehas_many through","description":"\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u5916\u90e8\u30ad\u30fc\u3092\u5909\u66f4\u3057\u305f\u3042\u3068\u3001has_many through\u3092\u3057\u3088\u3046\u3068\u3057\u3066\u8e93\u3044\u305f\u306e\u3067\u3001\u30e1\u30e2\u3002Users\u30c6\u30fc\u30d6\u30eb\u3068Sales\u30c6\u30fc\u30d6\u30eb\u3068Products\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u308b\u3068\u3059\u308b\u3002 Users\u30c6\u30fc\u30d6\u30eb\u306eid\u3068Sales\u30c6\u30fc\u30d6\u30eb\u306ecustomer_id\u3092\u7d10\u3065\u3051\u3001\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3067\u3042\u308bSales\u3092\u4ecb\u3055\u305a\u306bProduct\u304b\u3089User\u3092\u53d6\u5f97\u3057\u305f\u304b\u3063\u305f\u3002 class Product < ActiveRecord::Base has_many :sales has_many :users, :through => :sales end class User < ActiveRecord::Base has_m\u2026","blog_title":"ayaketan\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u52c9\u5f37\u65e5\u8a18","categories":["Ruby"],"provider_url":"https://hatena.blog","image_url":null,"blog_url":"https://ayaketan.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayaketan.hatenablog.com%2Fentry%2F2013%2F09%2F19%2F221639\" title=\"Rails4 \u5916\u90e8\u30ad\u30fc\u540d\u304c\u7570\u306a\u308b\u5834\u5408\u306ehas_many through - 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>"}