Page redirect, get url with ruby

Question

ruby

I have an address: site.com/?foo=bar
When I go to it, the server returns the Location HTTP header with a redirect to the second address, for example site.com/products/foo_id/bar_id

I only know the original one (http://site.com/ ?foo=bar), how can I use Ruby to find out the address where he redirects?

Answer 1

require 'open-uri'

puts open('http://site.com/?foo=bar').base_uri.to_s