0
1

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

[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
0
1
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
0
1

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?