From b00a298c02df8ab68e18bc107e41ce35533e1af1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mislav=20Marohni=C4=87?= <mislav.marohnic@gmail.com>
Date: Sun, 6 Apr 2008 15:18:39 +0200
Subject: [PATCH] fix will_paginate for yet another Rails edge change (r9230)

---
 lib/will_paginate.rb | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/will_paginate.rb b/lib/will_paginate.rb
index de5f7d237..4a1c1720c 100644
--- a/lib/will_paginate.rb
+++ b/lib/will_paginate.rb
@@ -34,8 +34,13 @@ def enable_activerecord
       ActiveRecord::Base.class_eval { include Finder }
 
       # support pagination on associations
-      [ ActiveRecord::Associations::AssociationCollection,
-          ActiveRecord::Associations::HasManyThroughAssociation ].each do |klass|
+      a = ActiveRecord::Associations
+      returning([ a::AssociationCollection ]) { |classes|
+        # detect http://dev.rubyonrails.org/changeset/9230
+        unless a::HasManyThroughAssociation.superclass == a::HasManyAssociation
+          classes << a::HasManyThroughAssociation
+        end
+      }.each do |klass|
         klass.class_eval do
           include Finder::ClassMethods
           alias_method_chain :method_missing, :paginate