From dc11a77ab7730ec213b5042e1261a7be8c211396 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Fri, 14 Jan 2011 14:40:11 -0800
Subject: write the delegate method directly to avoid `delegate` callstack
 overhead

---
 activerecord/lib/active_record/associations/association_proxy.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'activerecord')

diff --git a/activerecord/lib/active_record/associations/association_proxy.rb b/activerecord/lib/active_record/associations/association_proxy.rb
index b752f1fdc0..7f6e335858 100644
--- a/activerecord/lib/active_record/associations/association_proxy.rb
+++ b/activerecord/lib/active_record/associations/association_proxy.rb
@@ -51,7 +51,7 @@ module ActiveRecord
     # instantiation of the actual post records.
     class AssociationProxy #:nodoc:
       alias_method :proxy_extend, :extend
-      delegate :to_param, :to => :proxy_target
+
       instance_methods.each { |m| undef_method m unless m.to_s =~ /^(?:nil\?|send|object_id|to_a)$|^__|^respond_to|proxy_/ }
 
       def initialize(owner, reflection)
@@ -63,6 +63,10 @@ module ActiveRecord
         construct_scope
       end
 
+      def to_param
+        proxy_target.to_param
+      end
+
       # Returns the owner of the proxy.
       def proxy_owner
         @owner
-- 
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