Get redirect of a URL in Ruby

Question

According to Facebook graph API we can request a user profile picture with this (example):

https://graph.facebook.com/1489686594/picture

Bu

Answer 1

If you want a solution that:

• does not use gems
• follows all redirects
• works also with url-shortening services

require 'net/http'
require 'uri'

def follow_redirections(url)   
  response = Net::HTTP.get_response(URI(url))
  until response['location'].nil?
    response = Net::HTTP.get_response(URI(response['location']))
  end
  response.uri.to_s
end

# EXAMPLE USAGE
follow_redirections("https://graph.facebook.com/1489686594/picture") 
# => https://static.xx.fbcdn.net/rsrc.php/v3/yo/r/UlIqmHJn-SK.gif