gistfile1.rb

  def latitude
    
    token = 'latisquare.kenneth.io'
    secret = '' 
        
    consumer = OAuth::Consumer.new(token,secret, {
           :site               => "https://www.google.com",
           :scheme             => :header,
           :http_method        => :post,
           :request_token_path => "/accounts/OAuthGetRequestToken",
           :access_token_path  => "/accounts/OAuthGetAccessToken",
           :authorize_path     => "/latitude/apps/OAuthAuthorizeToken",
           :signature_method   => "HMAC-SHA1"
          })


    if !params[:oauth_token]
      request_token = consumer.get_request_token({ :oauth_callback => "http://latisquare.kenneth.io:3000/auth/latitude" }, { :scope => "https://www.googleapis.com/auth/latitude" })

      session[:oauth_latitude_request_token] = request_token.token
      session[:oauth_latitude_request_secret] = request_token.secret

      redirect_to request_token.authorize_url + "&domain=latisquare.kenneth.io&granularity=best&location=all"
    else

      request_token = OAuth::RequestToken.new(consumer, params[:oauth_token], session[:oauth_latitude_request_secret])
      request_verifier = params[:oauth_verifier]

      access_token = request_token.get_access_token(:oauth_verifier => request_verifier)

      config = {}
      config['access_token'] =  access_token.token
      config['access_secret'] = access_token.secret
    
      File.open(Rails.root.join('db', 'latitude.yml'), 'w') {|f| f.write( YAML::dump(config)) }

      redirect_to '/latitude'
    end

gistfile2.rb

  def latitude
    
    token = 'latisquare.kenneth.io'
    secret = 'emptied'
        
    consumer = OAuth::Consumer.new(token,secret, {
           :site               => "https://www.google.com",
           :request_token_path => "/accounts/OAuthGetRequestToken",
           :access_token_path  => "/accounts/OAuthGetAccessToken",
           :authorize_path     => "/latitude/apps/OAuthAuthorizeToken",
           :signature_method   => "HMAC-SHA1"
    })
      
    seed_file = File.join(Rails.root, 'db', 'latitude.yml')
    config = YAML::load_file(seed_file)

    access_token = OAuth::AccessToken.new(consumer, config['access_token'], config['access_secret'])
    request = access_token.get("https://www.googleapis.com/latitude/v1/currentLocation").to_yaml
      
    render :text => request.to_json
  end