Location Element not parsed from Stack Overflow Jobs RSS feed - ruby

Question

I am trying to parse the RSS feed from a Stack Overflow Jobs search (URL) using the built in Ruby RSS parser. For some reason I cannot access the Location element from the feed.
It crashes with
undefined method `location' for #<RSS::Rss::Channel::Item:0x000000020db720> (NoMethodError)
I am able to get the other elements (title, description, link, etc.) but not the location
Code
require 'rss'
require 'open-uri'
url = "https://stackoverflow.com/jobs/feed?q=%5bruby%5d&l=New+York%2c+NY%2c+United+States&d=20&u=Miles"
open(url) do |rss|
feed = RSS::Parser.parse(rss)
puts "Title: #{feed.channel.title}"
feed.items.each do |item|
puts item.title
puts item.location
end
end
How do I get this location value?

Answer 1

For some reason the location element has a namespace (xmlns attribute). I have not been able to find anything on how to use namespaces in the Ruby RSS model but using Nokogiri you can define custom namespaces and parse out the location attribute with the XPath (nokogiri docs).
require 'nokogiri'
require 'open-uri'
# Open the URL with Nokogiri XML parser
xml = Nokogiri::XML(open("http://stackoverflow.com/jobs/feed?q=%5Bruby%5D&l=New%20York%2C%20NY%2C%20United%20States&d=20&u=Miles"))
# xml.xpath('XPath', 'custom_namespace' => "http://namespace/url")
puts xml.xpath('//rss/channel/item/so:location', 'so' => 'http://stackoverflow.com/jobs/')