Question

I have written the following simple script to parse reddit/r/documentaries

require 'open-uri'
require 'nokogiri'

top_docs = Nokogiri::XML(open("http://www.reddit.com/r/Documentaries/top.rss"))
top_docs.xpath('//item').each do |documentary|
    documentary_description = documentary.xpath('description')
end

I am trying to gather an array of all the hyperlinks within documentary_description. What selector / method should I use to accomplish this?

Thanks

Answer 1

You can use the extract method provided by URI:

top_docs.xpath('//item').each do |documentary|
  documentary_description = documentary.xpath('description')
  links = URI.extract(documentary_description.text)
  ...
end