assets.rb in ms_deploy-0.0.11

- old
+ new

@@ -1,15 +1,15 @@
 Capistrano::Configuration.instance.load do
-
+  # http://www.bencurtis.com/2011/12/skipping-asset-compilation-with-capistrano/
   namespace :deploy do
     namespace :assets do
-      desc "Compile assets"
-      task :compile, :roles => :web do
-        run "cd #{release_path}; RAILS_ENV=#{rails_env} #{rake} assets:precompile"
+      task :precompile, :roles => :web, :except => { :no_release => true } do
+        from = source.next_revision(current_revision)
+        if capture("cd #{latest_release} && #{source.local.log(from)} lib/assets/ vendor/assets/ app/assets/ | wc -l").to_i > 0
+          run %Q{cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{asset_env} assets:precompile}
+        else
+          logger.info "Skipping asset pre-compilation because there were no asset changes"
+        end
       end
-
-      after 'deploy', 'deploy:assets:compile'
-      after 'deploy:migrations', 'deploy:assets:compile'
-
     end
   end
 end