Added: Both

Changed --> use global instead of a constant

app/controllers/press_shift_controller.rb

@@ -6,10 +6,12 @@ def index
   def press
     if cookies[:pressed].present?
       # DO NOTHING!!!
-    elsif params[:button] == "left"
-      $redis.incr('left_count')
-    elsif params[:button] == "right"
-      $redis.incr('right_count')
+    elsif params[:button] == 'left'
+      REDIS.incr('left_count')
+    elsif params[:button] == 'both'
+      REDIS.incr('both_count')
+    elsif params[:button] == 'right'
+      REDIS.incr('right_count')
     end
     cookies.permanent[:pressed] = params[:button]
     redirect_to root_path

app/views/press_shift/index.html.haml

@@ -4,11 +4,17 @@
 - if @cookie
   %p
     Left Count:
-    = $redis.get('left_count')
+    = REDIS.get('left_count')
+  %p
+    Both Count:
+    = REDIS.get('both_count')
   %p
     Right Count:
-    = $redis.get('right_count')
+    = REDIS.get('right_count')
 
 - else
   = link_to "Left", press_path(:button => "left"), :method => :post
+  |
+  = link_to "Both", press_path(:button => "both"), :method => :post
+  |
   = link_to "Right", press_path(:button => "right"), :method => :post

config/initializers/redis.rb

@@ -1,6 +1,6 @@
 if Rails.env.production?
-  uri = URI.parse(ENV["REDISTOGO_URL"])
-  $redis = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)
+  redis_uri = URI.parse(ENV["REDISTOGO_URL"])
+  REDIS = Redis.new(:host => redis_uri.host, :port => redis_uri.port, :password => redis_uri.password)
 else
-  $redis = Redis.new(:host => 'localhost', :port => 6379)
+  REDIS = Redis.new(:host => 'localhost', :port => 6379)
 end

db/seeds.rb

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