{"provider_url":"https://hatena.blog","title":"schema_plus\u3067\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u304b\u3051\u308b","blog_url":"https://ikm.hatenablog.jp/","height":"190","image_url":null,"author_url":"https://blog.hatena.ne.jp/a2ikm/","description":"schema_plus\u3092\u4f7f\u3046\u3068create_table\u3084add_column\u3067\u30ab\u30e9\u30e0\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u304d\u306b:references\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u30c6\u30fc\u30d6\u30eb\u540d\u3092\u6e21\u3059\u3060\u3051\u3067\u3001\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u624b\u8efd\u306b\u304b\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 create_table :posts do |t| t.integer :category_id, references: :categories end \u500b\u3005\u306b\u6307\u5b9a\u3059\u308b\u306e\u304c\u9762\u5012\u306a\u3068\u304d\u306f\u3001auto_create\u3092\u8a2d\u5b9a\u3059\u308c\u3070\u540d\u524d\u304c*_id\u306b\u30de\u30c3\u30c1\u3059\u308b\u30ab\u30e9\u30e0\u306b\u5bfe\u3057\u3066\u81ea\u52d5\u7684\u306b\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u304b\u3051\u3066\u304f\u308c\u308b\u3002 SchemaPlus.config.foreign_keys.auto_create = true\u2026","type":"rich","version":"1.0","blog_title":"There's an echo in my head","width":"100%","published":"2012-11-02 02:35:08","categories":["ruby","gem","activerecord"],"provider_name":"Hatena Blog","url":"https://ikm.hatenablog.jp/entry/2012/11/02/023508","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fikm.hatenablog.jp%2Fentry%2F2012%2F11%2F02%2F023508\" title=\"schema_plus\u3067\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u304b\u3051\u308b - There&#39;s an echo in my head\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"a2ikm"}