Use DependencyModule for included hooks in ActiveRecord

1 files changed, 2 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index 781a0290e8..e2dd36158f 100755
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -77,6 +77,8 @@ module ActiveRecord
 
   # See ActiveRecord::Associations::ClassMethods for documentation.
   module Associations # :nodoc:
+    extend ActiveSupport::DependencyModule
+
     # These classes will be loaded when associations are created.
     # So there is no need to eager load them.
     autoload :AssociationCollection, 'active_record/associations/association_collection'
@@ -89,10 +91,6 @@ module ActiveRecord
     autoload :HasOneAssociation, 'active_record/associations/has_one_association'
     autoload :HasOneThroughAssociation, 'active_record/associations/has_one_through_association'
 
-    def self.included(base)
-      base.extend(ClassMethods)
-    end
-
     # Clears out the association cache
     def clear_association_cache #:nodoc:
       self.class.reflect_on_all_associations.to_a.each do |assoc|