Rails twitter login

providers_controller.rb

#a simple controller to login with twitter
#add gem 'oauth' to gemfile
#setup a route to /twitter => #show and /twitter/callback => #callback 
class TwittersController < ApplicationController
  def consumer
    #return a consumer for twitter, add you key and secret here or dynamically grab from db etc.
    OAuth::Consumer.new(
          "key",
          "secret",
          :site => "https://api.twitter.com",
          :authorize_path => "/oauth/authenticate" #use /oauth/authorize if you want to force logins
          )
  end

  def show
    request_token = consumer.get_request_token(:oauth_callback => callback_twitter_url)    
    #save in a session we need it in callback
    session[:request_token] = request_token.token
    session[:request_token_secret] = request_token.secret
    redirect_to request_token.authorize_url

  end
  
  def callback
    request_token = OAuth::RequestToken.new(consumer, session[:request_token], session[:request_token_secret])
    access_token = request_token.get_access_token(:oauth_verifier => params[:oauth_verifier])
    
    #do something with access_token, save to db, use for authenticated twitter requests etc.
    render :text=> [access_token.params["oauth_token"],access_token.params["oauth_token_secret"],access_token.params["user_id"],access_token.params["screen_name"]].inspect      
  end  
end