From b6e15f9a1111469ac1c41eee23fa6ab3f2ec5be3 Mon Sep 17 00:00:00 2001
From: Sean Griffin <sean@thoughtbot.com>
Date: Wed, 2 Jul 2014 07:00:26 -0600
Subject: Don't error when `dup`ing a record with no PK

---
 activerecord/lib/active_record/core.rb | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'activerecord/lib/active_record/core.rb')

diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 224112b559..30b8485c8b 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -315,9 +315,8 @@ module ActiveRecord
 
     ##
     def initialize_dup(other) # :nodoc:
-      pk = self.class.primary_key
       @attributes = @attributes.dup
-      @attributes.write_from_database(pk, nil)
+      @attributes.reset(self.class.primary_key)
 
       run_callbacks(:initialize) unless _initialize_callbacks.empty?
 
-- 
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