gistfile1.rb

class ZombiesController < ApplicationController
  before_filter :find_zombie
  before_filter :check_for_tweets

  def show
    render :action => :show
  end

  def find_zombie
    @zombie = Zombie.find params[:id]
  end
  
  def check_for_tweets
    if @zombies.tweets.empty?
      redirect_to zombies_path
    end
  end
end