Automatically register assets for precompilation

Author: nickmarden

lib/font/awesome/grunticon/rails.rb

@@ -4,7 +4,25 @@ module Font
   module Awesome
     module Grunticon
       module Rails
-        class Engine < ::Rails::Engine; end
+        class Engine < ::Rails::Engine
+          initializer "font-awesome-grunticon-rails.assets.precompile" do |app|
+            {
+              'javascripts' => '*.js',
+              'stylesheets' => '*.css',
+              'images' => '*.png',
+              'images/png' => '*.png'
+            }.each do |dir, glob|
+              fulldir = ::File.expand_path("../../../../../vendor/assets/#{dir}", __FILE__)
+              # puts "Checking #{fulldir} for #{glob}"
+              ::Dir.glob("#{fulldir}/#{glob}").map do |f|
+                relative_path = f.sub("#{fulldir}/", '')
+                relative_path = "png/#{relative_path}" if dir == 'images/png'
+                # puts "Adding #{relative_path} to app.config.assets.precompile"
+                app.config.assets.precompile += [ relative_path ]
+              end
+            end
+          end
+        end
       end
     end
   end