How do I do a regex search in Nokogiri for text that matches a certain beginning?
Given:
require 'rubygems'
require 'nokogiri'
value = Nokogiri::HTML.parse(<<-HTML_END)
"<html>
<body>
<p id='para-1'>A</p>
<div class='block' id='X1'>
<h1>Foo</h1>
<p id='para-2'>B</p>
</div>
<p id='para-3'>C</p>
<h2>Bar</h2>
<p id='para-4'>D</p>
<p id='para-5'>E</p>
<div class='block' id='X2'>
<p id='para-6'>F</p>
</div>
</body>
</html>"
HTML_END
I want to do something like what I can do in Hpricot:
divs = value.search('//div[@id^="para-"]')
- How do I do a pattern search for elements in XPath style?
- Where would I find the documentation to help me? I didn't see this in the rdocs.
Answer
Use the xpath function starts-with:
value.xpath('//p[starts-with(@id, "para-")]').each { |x| puts x['id'] }