From c337e8707cd404ff2d8a69a6fd90b81cd7f7684b Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Fri, 25 Jan 2013 10:39:23 -0800
Subject: [PATCH] cache path parts in the instance

---
 actionpack/lib/action_dispatch/routing/route_set.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index eae3e35ba1..2bf732ac26 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -163,7 +163,8 @@ class OptimizedUrlHelper < UrlHelper
 
             def initialize(route, options)
               super
-              @arg_size = @route.required_parts.size
+              @path_parts = @route.required_parts
+              @arg_size   = @path_parts.size
             end
 
             def call(t, args)
@@ -185,7 +186,7 @@ def optimized_helper(args)
                 true
               end
 
-              @route.required_parts.each_with_index do |part, i|
+              @path_parts.each_with_index do |part, i|
                 # Replace each route parameter
                 # e.g. :id for regular parameter or *path for globbing
                 # with ruby string interpolation code
-- 
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