How do I Transform an .xml file to an instance of a ruby array?

Question

I have the following xml file:

/my_file.xml

<?xml version="1.0" encoding="utf-8" ?>
<words>
  <w>my_word</w>
  <w>second_word</w>
</words>

How can I do the following using Ruby:

Load
Parse
Transform an xml file to an instance of a ruby array:

words = ["my_word","second_word"]

kreek · Accepted Answer · 2011-08-23 21:13:53Z

3

With the Nokogiri gem...

require 'rubygems'
require 'nokogiri'

xml = '<?xml version="1.0" encoding="utf-8" ?>
<words>
<w>my_word</w>
<w>second_word</w>
</words>'

doc = Nokogiri::XML(xml)
words = doc.xpath("//w").map {|x| x.text}

edited Aug 23, 2011 at 21:13

answered Aug 23, 2011 at 19:02

kreek

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2 Comments

maerics Over a year ago

Except that XPath will return the Nokogiri text nodes instead of the text itself, try this instead doc.xpath("//w").map {|x| x.text}.

DNNX Over a year ago

In Ruby 1.9 it may be even shorter: oc.xpath("//w").map(&:text)

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