From 0e8280b19322bd3fdd7e18fc6ba35d45e986e611 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Thu, 9 Dec 2010 13:37:15 -0800
Subject: reuse the superclass methods for shorter codes

---
 activerecord/lib/active_record/observer.rb | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/activerecord/lib/active_record/observer.rb b/activerecord/lib/active_record/observer.rb
index a09c392f9d..8b011ad9af 100644
--- a/activerecord/lib/active_record/observer.rb
+++ b/activerecord/lib/active_record/observer.rb
@@ -90,15 +90,11 @@ module ActiveRecord
   #
   class Observer < ActiveModel::Observer
 
-    def initialize
-      super
-      observed_descendants.each { |klass| add_observer!(klass) }
-    end
-
     protected
 
-      def observed_descendants
-        observed_classes.map { |klass| klass.descendants }.flatten
+      def observed_classes
+        klasses = super
+        klasses + klasses.map { |klass| klass.descendants }.flatten
       end
 
       def add_observer!(klass)
-- 
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