Integerating Rails with Twitter using OAuth

To integerate twitter with your existing rails application follow the steps below:-

1. Install required Gem as sudo gem install Twitter.
2. Register your application in read-write mode with Twitter.
3. Note down the ConsumerToken and ConsumerSecret when application is registered on Twitter.
4. Refer the attached controller to authorize user on Twitter using OAuth and update the status there.

app/twitters_controller.rb

class TwittersController < ApplicationController
  
  #it is obtained from twitter when your application is registered
  ConsumerToken, ConsumerSecret  = 'consumer token', 'consumersecreat'
  
  before_filter :verify_oauth, :only => [:share_status]
  
  def share_status
    begin
      client.update("Voila! Status set from globallogic")
      flash[:notice] = "Twitter status updated successfully"
    rescue Exception => e 
      flash[:warning] = "Status is duplicate/invalid"
    end
    redirect_to root_path
  end
  
  def finalize
    oauth.authorize_from_request(session['rtoken'], session['rsecret'], params[:oauth_verifier])
    #profile = Twitter::Base.new(oauth).verify_credentials
    session['rtoken'] = session['rsecret'] = nil
    session[:atoken] = oauth.access_token.token
    session[:asecret] = oauth.access_token.secret
    redirect_to session[:redirect_to]
  end
  
  private
    def oauth
      @oauth ||= Twitter::OAuth.new(ConsumerToken, ConsumerSecret, :sign_in => false)
    end


    def client
      oauth.authorize_from_access(session[:atoken], session[:asecret])
      Twitter::Base.new(oauth)
    end
  
    def verify_oauth
      if session[:atoken].blank? or session[:asecret].blank?
        session[:redirect_to] = {:controller => params[:controller], :action => params[:action]}
        oauth.set_callback_url(finalize_twitters_url)


        session['rtoken']  = oauth.request_token.token
        session['rsecret'] = oauth.request_token.secret
    
        redirect_to oauth.request_token.authorize_url
      end
    end
  
end