{"height":"190","author_name":"karlley_jp","blog_title":"\u6642\u3005\u3068\u304a\u307e\u308f\u308a","image_url":null,"url":"https://karlley.hatenablog.jp/entry/2023/01/07/081205","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/karlley_jp/","published":"2023-01-07 08:12:05","description":"\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3067presense: true \u306e\u4f7f\u3044\u65b9\u3092\u6307\u6458\u3055\u308c\u305f\u306e\u3067\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002 \u7d50\u8ad6 \u95a2\u9023\u4ed8\u3051\u305f\u30e2\u30c7\u30eb\u306e\u5916\u90e8\u30ad\u30fc\u3078\u306epresense: true \u306f\u5fc5\u8981\u306a\u3044\u3002 \u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u7d10\u4ed8\u3051\u3089\u308c\u305f\u5916\u90e8\u30ad\u30fc\u306e\u5b58\u5728\u3057\u306a\u3044\u5024\u3084nil \u306e\u5834\u5408\u3078\u306epresence\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306f\u81ea\u52d5\u7684\u306b\u4ed8\u4e0e\u3055\u308c\u308b(Rails5\u304b\u3089)\u306e\u3067\u4e0d\u8981\u306b\u306a\u308b\u3002 Rails5\u304b\u3089belongs_to\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306e\u6319\u52d5\u304c\u5909\u308f\u3063\u305f - SHOYAN BLOG # \u89aa\u30e2\u30c7\u30eb class User < ApplicationRecord has_many :books end # \u5b50\u30e2\u30c7\u30eb class Book < Applic\u2026","version":"1.0","title":"\u3010Rails\u3011\u95a2\u9023\u4ed8\u3051\u305f\u30e2\u30c7\u30eb\u306e\u5916\u90e8\u30ad\u30fc\u3078\u306epresense: true\u306f\u5fc5\u8981\u306a\u3044","blog_url":"https://karlley.hatenablog.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkarlley.hatenablog.jp%2Fentry%2F2023%2F01%2F07%2F081205\" title=\"\u3010Rails\u3011\u95a2\u9023\u4ed8\u3051\u305f\u30e2\u30c7\u30eb\u306e\u5916\u90e8\u30ad\u30fc\u3078\u306epresense: true\u306f\u5fc5\u8981\u306a\u3044 - \u6642\u3005\u3068\u304a\u307e\u308f\u308a\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","type":"rich","categories":["Rails"],"width":"100%"}