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Editorial Team
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Asked: 2026-05-25T23:33:15+00:00

I’ve never encountered task of transforming XML from one form to another. I hear

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I’ve never encountered task of transforming XML from one form to another. I hear that XSLT is just for that, but I don’t want to go there. So, using only ruby and nokogiri, how can I:
remove all item elements but time from initial XML and also rename element time to HammerTime?
Initial XML: 

...
<item>
  <time>05.04.2011 9:53:23</time>
  <iddqd>42</iddqd>
  <idkfa>woot</idkfa>
</item>
<item>
...

Desired result:

...
<item>
  <HammerTime>05.04.2011 9:53:23</HammerTime>
</item>
<item>
...

I figured out how to put data from XML to array using nokogiri’s .xpath, but is there a way to make the desired transformation into another XML without manually having to write something like puts "<HammerTime>#{array['time']}</HammerTime>"?

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1 Answer

  1. Editorial Team

    Here you go:

    require 'rubygems'
require 'nokogiri'

doc = Nokogiri::HTML <<-EOHTML
<html>
  <body>
    <item>
      <time>05.04.2011 9:53:23</time>
      <iddqd>42</iddqd>
      <idkfa>woot</idkfa>
    </item>
  </body>
</html>
EOHTML

hammer = doc.at_css "time"
hammer.name = 'hammertime'
doc.css("iddqd").remove
doc.css("idkfa").remove

outfile = File.new("output.html", "w")
outfile.puts doc.to_html
outfile.close
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