Serve embedded maps through the assets pipeline

app/controllers/export_controller.rb

@@ -3,6 +3,8 @@ class ExportController < ApplicationController
   before_filter :authorize_web
   before_filter :set_locale
 
+  caches_page :embed
+
   def start
   end
 
@@ -23,4 +25,7 @@ class ExportController < ApplicationController
       redirect_to "http://parent.tile.openstreetmap.org/cgi-bin/export?bbox=#{bbox}&scale=#{scale}&format=#{format}"
     end
   end
+
+  def embed
+  end
 end