{"url":"https://mrradiology.hatenablog.jp/entry/2018/02/27/082330","published":"2018-02-27 08:23:30","title":"Rails5.1 | 23 | Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a | \u8cb7\u3044\u7269\u30ab\u30fc\u30c8\u306e\u5408\u8a08\u3092\u8868\u793a\u3055\u305b\u308b","provider_url":"https://hatena.blog","author_name":"MrRadiology","description":"\u30e9\u30f3\u30ad\u30f3\u30b0\u53c2\u52a0\u4e2d\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 [TOP] \u6b21>> \u30ab\u30fc\u30c8\u5168\u4f53\u306e\u5408\u8a08\u4fa1\u683c\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002 \u307e\u305a\u306f\u300cline_item\uff08\u54c1\u76ee\uff09\u300d\u306e\u5408\u8a08\u3092\u51fa\u3057\u307e\u3059\u3002 line_item\u30e2\u30c7\u30eb\u306e\u300cline_item.rb\u300d\u30d5\u30a1\u30a4\u30eb\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7de8\u96c6\u3057\u307e\u3059\u3002 \u3010app/models/line_item.rb\u3011 class LineItem < ActiveRecord::Base belongs_to :good belongs_to :cart def total_price good.price * quantity end end line_item\u306e\u5408\u8a08\u3092\u51fa\u3059\u300ctotal_price\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u8a18\u3057\u3066\u3044\u307e\u3059\u3002\u2026","blog_url":"https://mrradiology.hatenablog.jp/","type":"rich","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/M/MrRadiology/20180223/20180223173154.png","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmrradiology.hatenablog.jp%2Fentry%2F2018%2F02%2F27%2F082330\" title=\"Rails5.1 | 23 | Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a | \u8cb7\u3044\u7269\u30ab\u30fc\u30c8\u306e\u5408\u8a08\u3092\u8868\u793a\u3055\u305b\u308b -  \u5b66\u751f\u5411\u3051\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580 | \u7121\u6599\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":" \u5b66\u751f\u5411\u3051\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580 | \u7121\u6599","width":"100%","version":"1.0","provider_name":"Hatena Blog","height":"190","author_url":"https://blog.hatena.ne.jp/MrRadiology/","categories":["Ruby on Rails"]}