From 3c8b50020a054b7e103725a7cf25d9c51d583a63 Mon Sep 17 00:00:00 2001
From: Santiago Pastorino <santiago@wyeworks.com>
Date: Sun, 15 Aug 2010 11:33:21 -0300
Subject: Revert "Makes AR use AMo to_key implementation"

This reverts commit 36a84a4f15f29b41c7cac2f8de410055006a8a8d.
---
 activerecord/lib/active_record/attribute_methods/primary_key.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'activerecord/lib')

diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index 365fdeb55a..82d94b848a 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -3,6 +3,12 @@ module ActiveRecord
     module PrimaryKey
       extend ActiveSupport::Concern
 
+      # Returns this record's primary key value wrapped in an Array
+      # or nil if the record is a new_record?
+      def to_key
+        new_record? ? nil : [ id ]
+      end
+
       module ClassMethods
         # Defines the primary key field -- can be overridden in subclasses. Overwriting will negate any effect of the
         # primary_key_prefix_type setting, though.
-- 
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