Cache recent crops on homepage

app/models/crop_sweeper.rb

@@ -3,6 +3,7 @@ class CropSweeper < ActionController::Caching::Sweeper
 
   def after_create(crop)
     expire_fragment('homepage_stats')
+    expire_fragment('recent_crops')
   end
 
   def after_update(crop)
@@ -11,6 +12,7 @@ class CropSweeper < ActionController::Caching::Sweeper
 
   def after_destroy(crop)
     expire_fragment('homepage_stats')
+    expire_fragment('recent_crops')
   end
 
 end

app/views/home/_crops.html.haml

@@ -12,10 +12,11 @@
 
 .row-fluid
   .span12
-    %p
-      %strong
-        Recently added crops:
-      != @recent_crops.map {|c| link_to(c, c) }.join(", ")
+    - cache "recent_crops" do
+      %p
+        %strong
+          Recently added crops:
+        != @recent_crops.map {|c| link_to(c, c) }.join(", ")
 
     %p
       =link_to "View all crops", crops_path, :class => 'btn btn-primary'