nokogiri only return one item

I call the method "read" and only return one item from xml file

the method "read" return:

9 3 max date 5

and should return all items from xml

how do I get the whole xml from the method read?

Sorry for my english

require 'nokogiri'
require 'open-uri'

def create
    var = 0  
     while var < 10
        builder = Nokogiri::XML::Builder.new do 
        item {
               data var
               port '3'
               length 'max'
               date 'date'
               limit '5'
             }
        var += 1  
     end
    end
   return Nokogiri::XML(builder.to_xml).root.to_xml
end

def read

    doc = Nokogiri::XML(create)

    doc.xpath('//item').each do |item|
        data = item.at_xpath('./data').content
        port = item.at_xpath('./port').content
        length = item.at_xpath('./length').content
        date = item.at_xpath('./date').content
        limit = item.at_xpath('./limit').content

        puts data
        puts port
        puts length
        puts date
        puts limit
    end

end

read