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[Rails] バリデーションの書き方

Last updated at Posted at 2020-06-24

Progate学習メモ

models/post.rb
class Post < ApplicationRecord

  validates :検証するカラム名, {検証する内容}

end

色々なバリデーション

カラムが存在するかどうか
validates :content, {presence: true}

最大140文字まで受け付ける
validates :content, {length: {maximum: 140}}

重複がないか
validates :email, {uniqueness: true}

バリデーションをまとめて書く

models.post.rb
class Post < ApprocationRecord

  validates :content, {presence: true, length: {maximum: 140}}

end
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