{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fakinobu.net%2Fentry%2F2019%2F06%2F20%2F164836\" title=\"Rails\u306emigration\u3067\u5f8c\u304b\u3089NULL\u5236\u7d04\u3092\u8a2d\u5b9a\u3059\u308b - \u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2019-06-20 16:48:36","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/kuronekopunk/","type":"rich","width":"100%","title":"Rails\u306emigration\u3067\u5f8c\u304b\u3089NULL\u5236\u7d04\u3092\u8a2d\u5b9a\u3059\u308b","url":"https://akinobu.net/entry/2019/06/20/164836","blog_title":"\u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044","author_name":"kuronekopunk","description":"Rails\u306emigration\u3067\u5f8c\u304b\u3089NULL\u5236\u7d04\u3092\u8a2d\u5b9a\u3059\u308b - Qiita \u304b\u3089\u306e\u8ee2\u8f09\u3067\u3059\u3002 NULL\u5236\u7d04\u306e\u8ffd\u52a0\u306b\u306f change_column_null \u3092\u4f7f\u3044\u307e\u3059\u3002 \u5f15\u6570\u306b\u306f\u30c6\u30fc\u30d6\u30eb\u540d\u3001\u30ab\u30e9\u30e0\u540d\u3001null false\u304btrue\u304b\u3001\u5909\u66f4\u5f8c\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024 class ChangePointColumnOnPost < ActiveRecord::Migration[5.2] def change change_column_null :posts, :point, false, 0 end end https://api.rubyonrails.org/classes/ActiveRecor\u2026","height":"190","categories":["Ruby on Rails"],"blog_url":"https://akinobu.net/","image_url":null}