Specifying order in to_xml

• Check this out:

  
  def to_xml(options = {})
     @attrib_order = ["x", "y", "z"]
     #shamelessly stolen from active_support::to_xml
     options[:indent] ||= 2
     options.reverse_merge!({
          :builder =< Builder::XmlMarkup.new(:indent =< option[:indent]),
          :root =< "advertiser" })
     xm = options[:builder]
     xm.instruct!
     xm.advertiser ("id" =< ADVERTISER_ID) {
       xm.ad {
        @attrib_order.each { |key| ordered_xml(key, @attributes[key], options)}
       }
     }
  end