huzzahs_controller.rb

class HuzzahsController < ApplicationController
  before_filter :login_required
  before_filter :set_twitter_oauth_client
  
  def connect
    request_token = @client.request_token
    session[:twitter_request_token] = request_token.token
    session[:twitter_request_token_secret] = request_token.secret
    redirect_to request_token.authorize_url
  end
  
  def twitter_auth
    @access_token = @client.authorize(
      session[:twitter_request_token],
      session[:twitter_request_token_secret])

    if @client.authorized?
      session[:twitter_access_token] = @access_token.token
      session[:twitter_secret_token] = @access_token.secret
    end
    redirect_to session[:huzzah_redirect_to]
  end
  
  def new
    @huzzah = current_user.huzzahs.build(params[:huzzah])
    @huzzah.bid = @bid
    if session[:twitter_access_token] && session[:twitter_secret_token]
      @twitter_user = @client.info
      render :action => 'new'
    else
      session[:huzzah_redirect_to] = request.url
      render :action => 'pitstop'
    end
  end
  
  def create
    @huzzah = current_user.huzzahs.build(params[:huzzah])
    @huzzah.bid = @bid
    
    if update = @client.update(@huzzah.message)
      @huzzah.save
      flash[:notice] = "Your huzzah has been posted to Twitter! http://twitter.com/#{update["user"]["screen_name"]}/statuses/#{update["id"]}"
      redirect_to root_url
    else
      flash[:notice] = "We're sorry but we had trouble communicating with Twitter. Please try again"
      render :action => "new"
    end
  end
  
  def set_twitter_oauth_client
    @client = TwitterOAuth::Client.new(
      :consumer_key => ::APP_CONFIG[:twitter_oath_keys]['consumer_key'],
      :consumer_secret => ::APP_CONFIG[:twitter_oath_keys]['consumer_secret'],
      :token => session[:twitter_access_token],
      :secret => session[:twitter_secret_token]
    )
  end
end

new.haml.html

%h1 Send a Twitter Huzzah!
%fieldset
  %legend= "To be sent from your Twitter username: #{@twitter_user['screen_name']}"
  = error_messages_for :huzzah

  - form_for @huzzah, :url => bid_huzzahs_path(@bid) do |f|
    %p 
      = f.label :message
      %br
      = f.text_area :message
    = f.hidden_field :posted_to, :value => 'twitter'
    %p
      = f.submit 'Huzzah!'

pitstop.haml.html

= link_to 'Send a Huzzah to Twitter', connect_new_huzzah_path
You'll be sent to Twitter to authenticate your Twitter account. Then you'll be redirected back here where you can update your status with your winning bid details!

routes.rb

map.resources :huzzahs
map.connect_new_huzzah '/huzzahs/new/connect', :controller => 'huzzahs', :action => 'connect'
map.twitter_auth_new_huzzah '/huzzahs/new/twitter_auth', :controller => 'huzzahs', :action => 'twitter_auth'