{"title":"\u5faa\u74b0\u53c2\u7167\u3057\u3066\u308b\u3068\u304d\u306esave\u306b\u304a\u3051\u308bActive Record\u306e\u6319\u52d5","type":"rich","description":"class A < ApplicationRecord belongs_to :b end class B < ApplicationRecord belongs_to :a end a = A.new b = B.new a.b = b b.a = a a.save \u307f\u305f\u3044\u306a\u3068\u304d\u3069\u306e\u3088\u3046\u306b\u52d5\u304f\u306e\u304b\u3092\u8abf\u3079\u305f\u3002 \u2193\u3053\u306e\u3078\u3093\u3092\u53c2\u8003\u306b\u3057\u305f rails/autosave_association.rb at master \u00b7 rails/rails belongs_to\u95a2\u9023\u3092\u8a2d\u5b9a\u3057\u305f\u5834\u5408\u3001before_save\u3067save_belongs_to_association\u304c\u5b9f\u884c\u3055\u308c\u308b a.save\u3057\u305f\u3068\u304d\u306b\u3001\u2026","height":"190","version":"1.0","author_name":"willnet","width":"100%","published":"2019-08-29 17:23:39","url":"https://memo.willnet.in/entry/2019/08/29/172339","blog_url":"https://memo.willnet.in/","provider_url":"https://hatena.blog","categories":[],"image_url":null,"author_url":"https://blog.hatena.ne.jp/willnet/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmemo.willnet.in%2Fentry%2F2019%2F08%2F29%2F172339\" title=\"\u5faa\u74b0\u53c2\u7167\u3057\u3066\u308b\u3068\u304d\u306esave\u306b\u304a\u3051\u308bActive Record\u306e\u6319\u52d5 - \u304a\u3082\u3057\u308dweb\u30b5\u30fc\u30d3\u30b9\u958b\u767a\u65e5\u8a18\u30c1\u30e9\u30b7\u306e\u88cf\" 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":"\u304a\u3082\u3057\u308dweb\u30b5\u30fc\u30d3\u30b9\u958b\u767a\u65e5\u8a18\u30c1\u30e9\u30b7\u306e\u88cf","provider_name":"Hatena Blog"}