2 files changed, 21 insertions, 10 deletions
diff --git a/actionpack/lib/action_controller/metal/url_for.rb b/actionpack/lib/action_controller/metal/url_for.rb
index f43fc3f609..ef1071bb3d 100644
--- a/actionpack/lib/action_controller/metal/url_for.rb
+++ b/actionpack/lib/action_controller/metal/url_for.rb
@@ -5,17 +5,18 @@ module ActionController
     include AbstractController::UrlFor
 
     def url_options
-      options = {}
-      @_routes ||= nil
-      if _routes.equal?(env["action_dispatch.routes"])
-        options[:script_name] = request.script_name.dup
-      end
+      @_url_options ||= begin
+        options = {}
+        if _routes.equal?(env["action_dispatch.routes"])
+          options[:script_name] = request.script_name.dup
+        end
 
-      super.merge(options).reverse_merge(
-        :host => request.host_with_port,
-        :protocol => request.protocol,
-        :_path_segments => request.symbolized_path_parameters
-      )
+        super.merge(options).reverse_merge(
+          :host => request.host_with_port,
+          :protocol => request.protocol,
+          :_path_segments => request.symbolized_path_parameters
+        ).freeze
+      end
     end
   end
 end
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index aea28d9265..0ade42ba2d 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -26,6 +26,10 @@ module ActionController
       options.stylesheets_dir      ||= paths.public.stylesheets.to_a.first
       options.page_cache_directory ||= paths.public.to_a.first
 
+      # make sure readers methods get compiled
+      options.asset_path           ||= nil
+      options.asset_host           ||= nil
+
       ActiveSupport.on_load(:action_controller) do
         include app.routes.mounted_helpers
         extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
@@ -33,5 +37,11 @@ module ActionController
         options.each { |k,v| send("#{k}=", v) }
       end
     end
+
+    initializer "action_controller.compile_config_methods" do
+      ActiveSupport.on_load(:action_controller) do
+        config.compile_methods! if config.respond_to?(:compile_methods!)
+      end
+    end
   end
 end