{"type":"rich","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/M/MrRadiology/20200716/20200716084514.png","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmrradiology.hatenablog.jp%2Fentry%2F2020%2F08%2F17%2F111534\" title=\"\u3010\u5b66\u7fd25.0\u3011\u3010MacOSX\u3011\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3 -  \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>","width":"100%","categories":["MacOSX"],"blog_url":"https://mrradiology.hatenablog.jp/","blog_title":" \u5b66\u751f\u5411\u3051\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580 | \u7121\u6599","author_url":"https://blog.hatena.ne.jp/MrRadiology/","height":"190","published":"2020-08-17 11:15:34","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","title":"\u3010\u5b66\u7fd25.0\u3011\u3010MacOSX\u3011\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3","url":"https://mrradiology.hatenablog.jp/entry/2020/08/17/111534","author_name":"MrRadiology","version":"1.0","description":"\u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002 \u30b3\u30de\u30f3\u30c9 rails g model Subscription project:references user:references \u300cdb\\migrate\\20200715223129_create_subscriptions.rb\u300d\u30d5\u30a1\u30a4\u30eb\u3092\u7de8\u96c6\u3057\u307e\u3059\u3002 \u8a18\u8ff0\u8ffd\u52a0 db\\migrate\\20200715223129_create_subscriptions.rb 9\u884c\u76ee\u306b\u300cadd_index :subscriptions, [:project_id, :user_id], unique: true\u300d\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002 class CreateSubscri\u2026"}