check timezone valid

<br />module TimeFunc<br /> def self.included(base)<br /> base.class_eval do<br /> base.extend Methods<br /> end <br /> end <br /> <br /> module Methods<br /> def check_timezone_legal(timezone)<br /> raise IllegalTimeZone unless ActiveSupport::TimeZone::ZONES.map(&:name).include?(timezone)<br /> end<br /> end<br />end<br />