{"id":8326,"date":"2022-06-30T06:00:53","date_gmt":"2022-06-29T21:00:53","guid":{"rendered":"https:\/\/yumishin.com\/?p=8326"},"modified":"2022-06-30T06:00:53","modified_gmt":"2022-06-29T21:00:53","slug":"rails-not-null","status":"publish","type":"post","link":"https:\/\/yumishin.com\/?p=8326","title":{"rendered":"Rails\u306e\u30c6\u30fc\u30d6\u30eb\u30ab\u30e9\u30e0\u3078\u306eNotNull\u5236\u7d04\u3092\u5f8c\u304b\u3089\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<h2 id=\"i-0\">Rails\u306e\u30c6\u30fc\u30d6\u30eb\u30ab\u30e9\u30e0\u3078\u306eNotNull\u5236\u7d04\u3092\u5f8c\u304b\u3089\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u3001\u5f8c\u304b\u3089Not Null\u5236\u7d04\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"pre_tag\"><span><i class=\"fa fa-code\"><\/i> \u30b3\u30fc\u30c9<\/span><\/p>\n<pre><code>class ChangeColumnsAddNotnullOnTasks &lt; ActiveRecord::Migration[5.2]\n  def change\n    change_column_null :tasks, :title, false\n    change_column_null :tasks, :created_at, false\n    change_column_null :tasks, :updated_at, false\n  end\nend<\/code><\/pre>\n<\/div>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306bfalse\u306b\u3059\u308b\u3053\u3068\u3067\u3001not null\u5236\u7d04\u3092\u3064\u3051\u3089\u308c\u308b\u611f\u3058\u3067\u3059\u3002<\/p>\n<div class=\"pre_tag\"><span><i class=\"fa fa-code\"><\/i> \u30b3\u30fc\u30c9<\/span><\/p>\n<pre><code>change_column_null :\u30c6\u30fc\u30d6\u30eb\u540d, :\u30ab\u30e9\u30e0\u540d, false\n<\/code><\/pre>\n<\/div>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306btrue\u306b\u3059\u308b\u3068\u3001not null\u5236\u7d04\u3092\u5916\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"pre_tag\"><span><i class=\"fa fa-code\"><\/i> \u30b3\u30fc\u30c9<\/span><\/p>\n<pre><code>change_column_null :\u30c6\u30fc\u30d6\u30eb\u540d, :\u30ab\u30e9\u30e0\u540d, true<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Rails\u306e\u30c6\u30fc\u30d6\u30eb\u30ab\u30e9\u30e0\u3078\u306eNotNull\u5236\u7d04\u3092\u5f8c\u304b\u3089\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5 \u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u3001\u5f8c\u304b\u3089Not Null\u5236\u7d04\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u306e\u3088\u3046\u306bfalse\u306b\u3059\u308b\u3053\u3068\u3067\u3001not null\u5236\u7d04\u3092\u3064\u3051\u3089\u308c\u308b\u611f\u3058\u3067\u3059\u3002 \u4ee5 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":8327,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[256],"tags":[],"class_list":{"0":"post-8326","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-it","8":"entry"},"_links":{"self":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/8326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8326"}],"version-history":[{"count":1,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/8326\/revisions"}],"predecessor-version":[{"id":8328,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/8326\/revisions\/8328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/media\/8327"}],"wp:attachment":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}