{"title":"Rails5\u3067\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3067updated_at\u3092\u66f4\u65b0\u305b\u305a\u306b\u30ab\u30e9\u30e0\u3092\u66f4\u65b0\u3059\u308b","width":"100%","url":"https://shinespark.hatenablog.com/entry/2018/03/11/090000","type":"rich","image_url":"https://images-fe.ssl-images-amazon.com/images/I/51TODrMIEnL._SL160_.jpg","published":"2018-03-11 09:00:00","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshinespark.hatenablog.com%2Fentry%2F2018%2F03%2F11%2F090000\" title=\"Rails5\u3067\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3067updated_at\u3092\u66f4\u65b0\u305b\u305a\u306b\u30ab\u30e9\u30e0\u3092\u66f4\u65b0\u3059\u308b - \u4eba\u751f\u30b7\u30fc\u30b1\u30f3\u30b9\u30d6\u30ec\u30a4\u30af\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://shinespark.hatenablog.com/","version":"1.0","author_url":"https://blog.hatena.ne.jp/ShineSpark/","blog_title":"\u4eba\u751f\u30b7\u30fc\u30b1\u30f3\u30b9\u30d6\u30ec\u30a4\u30af","author_name":"ShineSpark","provider_name":"Hatena Blog","categories":["Rails"],"description":"\u74b0\u5883 Rails 5.x mysql 5.7 \u72b6\u6cc1 \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u8abf\u3079\u305f User.record_timestamps = false \u306a\u3069\u3092\u884c\u3063\u3066\u3082\u3001updated_at\u304c\u66f4\u65b0\u3055\u308c\u3066\u3057\u307e\u3063\u305f\u3002 mysql\u306e\u30c6\u30fc\u30d6\u30eb\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u305f\u3089\u3001ON UPDATE CURRENT_TIMESTAMP \u304c\u4ed8\u3044\u3066\u3044\u305f\u3002 `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, \u5bfe\u5fdc updated_at \u30ab\u30e9\u30e0\u306b\u76f4\u63a5\u5143\u306eupdated_at\u3092\u6307\u5b9a\u3059\u308bSQL\u3092\u5b9f\u884c\u3057\u305f\u3089updated_at\u3092\u66f4\u65b0\u305b\u2026","provider_url":"https://hatena.blog"}