class LocaleSiteSetting def self.valid_value?(val) supported_locales.include?(val) end def self.all_values supported_locales end private @lock = Mutex.new def self.supported_locales @lock.synchronize do @supported_locales ||= Dir.glob( File.join(Rails.root, 'config', 'locales', 'client.*.yml') ).map {|x| x.split('.')[-2]}.sort end end end