mokevnin/rails-examples

class PasswordConfirmationType
  include BaseTypeWithoutActiveRecord

  attribute :email, String

  validates :email, presence: true, email: true

  validate :check_user, if: :email

  def user
    ::User.active.where(email: email.mb_chars.downcase).first
  end

  private

  def check_user
    if !user
      errors.add(:email, :user_not_found)
    end
  end
end