Using ruby/nokogiri to transform xml to another xml
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 开发者_C百科manually having to write something like puts "<HammerTime>#{array['time']}</HammerTime>"?
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
What do you mean with
into another XML without manually having to write something like
puts "<HammerTime>#{array['time']}</HammerTime>"?
If you want to transform an XML element into another in a language-independent way, you can use XSLT transformations (or stylesheet). Once you have your XSLT file you can apply it with Nokogiri's Nokogiri::XSLT::Stylesheet#apply_to.
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