ruby on rails - Html Data parsing issues in nokogiri -


i having 1 html file having plain html

i using ruby 1.8.7 need take po number & tracking no . in tracking no missing need put 'nil' in case.

but still not able solution properly.

<html>   <head>   </head>   <body>     <div>***note*** <br> items<br><br>     invoice number : [982157] po number : [7894562] <br>shipped to:<br>hohne<br> troxler rd<br><br>india<br>     invoice number : [982157] po number : [7894562] <br>shipped to:<br>hohne<br><br><br>     <br>     invoice number : [982157] po number : [7894562] <br>shipped to:<br>hohne<br>troxler rd<br><br>india<br><br>shipped via : ups    track : <a href= ab.com> 1z2559690357791340</a><br><font face="courier" size="2" color="black"><br>     <br>     invoice number : [982157] po number : [7894562] <br>shipped to:<br>hohne<br>troxler rd<br><br>india<br>     <br>     invoice number : [982157] po number : [7894562] <br>shipped to:<br>hohne<br> troxler rd<br><br>india<br><br>shipped via : ups    track : <a href= ab.com> 1z2559690357791340</a><br><font face="courier" size="2" color="black"><br>   </body> </html>

i having code 

require 'rubygems' require 'nokogiri'    require 'open-uri'  page_url = "a.html"  page = nokogiri::html(open(page_url))     data = page.css("body").text      po_numbers = data.scan(/invoice number : \[\d+\] po number : \[(\d+)\]/).flatten     tracking_numbers = page.css("a").text.split      [["po number", "tracking number"]].concat(po_numbers.zip(tracking_numbers))  puts po_numbers  puts tracking_numbers   => po_numbers = ["7894562", "7894562", "7894562","7894562","7894562"] => tracking_numbers = ["1z2559690357791340", "1z2559690357791340"]  => po_numbers.zip(tracking_numbers) => [["7894562", "1z2559691257791340"], ["7894562", "1z2559690357791340"], ["7894562", "1z2559690357791340"],["7894562","nil"],["7894562,nil "]]  want  => [["7894562", "1z2559691257791340"], ["7894562", "nil"], ["7894562", "1z2559690357791340"],["7894562","nil"],["7894562,1z2559690357791340 "]]

i suggest using hash in saving po_numbers , tracking_numbers can associate po_numbers tracking_numbers


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