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データベースのテーブルにカラムを追加する(Rails)

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対象

  • Ruby on Railsのデータベースをいじりたい
  • RailsでDBを操作するコマンドを忘れた

既存のテーブルにカラムを追加する場合、migrationスクリプトを作成する

マイグレーションスクリプトを作成

rails generate migration Add(カラム名)To(テーブル名) (カラム名):(型名)
ex)rails generate migration AddAuthor_idToBlogposts author_id:string

マイグレーションの実行

rake db:migrate
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