You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

16 lines
471 B

  1. # frozen_string_literal: true
  2. # See also: USERNAME_RE in the Account class
  3. class UniqueUsernameValidator < ActiveModel::Validator
  4. def validate(account)
  5. return if account.username.nil?
  6. normalized_username = account.username.downcase
  7. scope = Account.where(domain: nil).where('lower(username) = ?', normalized_username)
  8. scope = scope.where.not(id: account.id) if account.persisted?
  9. account.errors.add(:username, :taken) if scope.exists?
  10. end
  11. end