From 83005cf501ac16a5517b65cd7a47d74338b76ca2 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Thu, 30 Jun 2011 11:53:06 -0700
Subject: [PATCH] only calculate method name once

---
 activerecord/lib/active_record/attribute_methods/read.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb
index aef99e3129..462ea9ac77 100644
--- a/activerecord/lib/active_record/attribute_methods/read.rb
+++ b/activerecord/lib/active_record/attribute_methods/read.rb
@@ -99,8 +99,9 @@ module ActiveRecord
       # Returns the value of the attribute identified by <tt>attr_name</tt> after it has been typecast (for example,
       # "2004-12-12" in a data column is cast to a date object, like Date.new(2004, 12, 12)).
       def read_attribute(attr_name)
-        if respond_to? "_#{attr_name}"
-          send "_#{attr_name}" if @attributes.has_key?(attr_name.to_s)
+        method = "_#{attr_name}"
+        if respond_to? method
+          send method if @attributes.has_key?(attr_name.to_s)
         else
           _read_attribute attr_name
         end