Ugly, but it works

Gemfile

@@ -7,6 +7,16 @@ gem 'rails', '3.0.7'
 
 gem 'sqlite3'
 
+gem 'redis'
+
+# rake fix
+gem 'rake', '~> 0.8.7'
+
+gem 'haml'
+
+# As suggested by Redis
+gem 'SystemTimer'
+
 # Use unicorn as the web server
 # gem 'unicorn'
 

Gemfile.lock

@@ -1,6 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
+    SystemTimer (1.2.3)
     abstract (1.0.0)
     actionmailer (3.0.7)
       actionpack (= 3.0.7)
@@ -32,6 +33,7 @@ GEM
     builder (2.1.2)
     erubis (2.6.6)
       abstract (>= 1.0.0)
+    haml (3.1.1)
     i18n (0.5.0)
     mail (2.2.19)
       activesupport (>= 2.3.6)
@@ -58,7 +60,8 @@ GEM
       activesupport (= 3.0.7)
       rake (>= 0.8.7)
       thor (~> 0.14.4)
-    rake (0.9.0)
+    rake (0.8.7)
+    redis (2.2.0)
     sqlite3 (1.3.3)
     thor (0.14.6)
     treetop (1.4.9)
@@ -69,5 +72,9 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  SystemTimer
+  haml
   rails (= 3.0.7)
+  rake (~> 0.8.7)
+  redis
   sqlite3

app/controllers/press_shift_controller.rb

@@ -0,0 +1,15 @@
+class PressShiftController < ApplicationController
+  def index
+    @cookie = cookies[:pressed]
+  end
+
+  def press
+    if params[:button] == "left"
+      $redis.incr('left_count')
+    elsif params[:button] == "right"
+      $redis.incr('right_count')
+    end
+    cookies.permanent[:pressed] = params[:button]
+    redirect_to root_path
+  end
+end

app/helpers/press_shift_helper.rb

@@ -0,0 +1,2 @@
+module PressShiftHelper
+end

app/views/press_shift/index.html.haml

@@ -0,0 +1,14 @@
+%h1
+  Which Shift Button?
+
+- if @cookie
+  %p
+    Left Count:
+    = $redis.get('left_count')
+  %p
+    Right Count:
+    = $redis.get('right_count')
+
+- else
+  = link_to "Left", press_path(:button => "left"), :method => :post
+  = link_to "Right", press_path(:button => "right"), :method => :post

config/initializers/redis.rb

@@ -0,0 +1 @@
+$redis = Redis.new(:host => 'localhost', :port => 6379)

config/routes.rb

@@ -1,58 +1,4 @@
 WhichShiftButton::Application.routes.draw do
-  # The priority is based upon order of creation:
-  # first created -> highest priority.
-
-  # Sample of regular route:
-  #   match 'products/:id' => 'catalog#view'
-  # Keep in mind you can assign values other than :controller and :action
-
-  # Sample of named route:
-  #   match 'products/:id/purchase' => 'catalog#purchase', :as => :purchase
-  # This route can be invoked with purchase_url(:id => product.id)
-
-  # Sample resource route (maps HTTP verbs to controller actions automatically):
-  #   resources :products
-
-  # Sample resource route with options:
-  #   resources :products do
-  #     member do
-  #       get 'short'
-  #       post 'toggle'
-  #     end
-  #
-  #     collection do
-  #       get 'sold'
-  #     end
-  #   end
-
-  # Sample resource route with sub-resources:
-  #   resources :products do
-  #     resources :comments, :sales
-  #     resource :seller
-  #   end
-
-  # Sample resource route with more complex sub-resources
-  #   resources :products do
-  #     resources :comments
-  #     resources :sales do
-  #       get 'recent', :on => :collection
-  #     end
-  #   end
-
-  # Sample resource route within a namespace:
-  #   namespace :admin do
-  #     # Directs /admin/products/* to Admin::ProductsController
-  #     # (app/controllers/admin/products_controller.rb)
-  #     resources :products
-  #   end
-
-  # You can have the root of your site routed with "root"
-  # just remember to delete public/index.html.
-  # root :to => "welcome#index"
-
-  # See how all your routes lay out with "rake routes"
-
-  # This is a legacy wild controller route that's not recommended for RESTful applications.
-  # Note: This route will make all actions in every controller accessible via GET requests.
-  # match ':controller(/:action(/:id(.:format)))'
+  root :to => 'press_shift#index'
+  match '/press' => 'press_shift#press', :as => :press
 end

db/schema.rb

@@ -0,0 +1,15 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended to check this file into your version control system.
+
+ActiveRecord::Schema.define(:version => 0) do
+
+end

db/seeds.rb

@@ -5,3 +5,6 @@
 #
 #   cities = City.create([{ :name => 'Chicago' }, { :name => 'Copenhagen' }])
 #   Mayor.create(:name => 'Daley', :city => cities.first)
+
+$redis.set('left_count', 0)
+$redis.set('right_count', 0)