https get with parameters in Ruby

https.rb

def get_currentuser_info cookies=nil                                                                        
  uri_domain = "https://www.googleapis.com"                                                                 
  uri_path = "/oauth2/v1/userinfo"                                                                          
  params = {alt: "json", access_token: cookies[:access_token]}                                              
  uri_string = uri_domain + uri_path + "?" +
  params.map{|k,v| "#{k}=#{CGI::escape(v.to_s)}"}.join('&')
  uri = URI(uri_string)
  response_hash = nil
  Net::HTTP.start(uri.host,
    uri.port,
    :use_ssl => uri.scheme == 'https',
    :verify_mode => OpenSSL::SSL::VERIFY_NONE) do |http|
      request = Net::HTTP::Get.new uri.request_uri
      response = http.request request
  end 
  response_hash = ActiveSupport::JSON.decode(response.body) unless response.nil?
  end                                                               
end