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[rails]バリデーションを設定

Last updated at Posted at 2020-08-02

バリデーションとは

パラメーターを受け取った時に該当カラムにデータが入っているか確認する機能です。

以下の例の場合、nameカラムがnil(データがない)であるかどうかを確認します。
nilだと保存されません。

app/models/user.rb
class User < ApplicationRecord
 
  validates :name, presence: true
  
end
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