やりたいこと
方法
rails c
モデル名.column_names
たとえばUserモデルなら
[1] pry(main)> User.column_names => ["id", "name", "email", "password_digest", "created_at", "updated_at", "admin"]
awesome_print
というgemをインストールしてたら
[2] pry(main)> ap User.column_names [ [0] "id", [1] "name", [2] "email", [3] "password_digest", [4] "created_at", [5] "updated_at", [6] "admin" ]