app/validators/unreserved_validator.rb

   1 # frozen_string_literal: true
   2
   3 class UnreservedValidator < ActiveModel::EachValidator
   4   def validate_each(record, attribute, value)
   5     return if value.nil?
   6     record.errors.add(attribute, I18n.t('accounts.reserved_username')) if reserved_username?(value)
   7   end
   8
   9   private
  10
  11   def reserved_username?(value)
  12     return false unless Setting.reserved_usernames
  13     Setting.reserved_usernames.include?(value.downcase)
  14   end
  15 end