fixes #65 avoid duplicating order_values

lib/kaminari/models/active_record_extension.rb

@@ -5,6 +5,8 @@ module Kaminari
     extend ActiveSupport::Concern
     included do
       def self.inherited(kls) #:nodoc:
+        super
+
         kls.class_eval do
           include Kaminari::ConfigurationMethods
 
@@ -17,8 +19,6 @@ module Kaminari
             include Kaminari::PageScopeMethods
           end
         end
-
-        super
       end
     end
   end

spec/models/scopes_spec.rb

@@ -40,6 +40,11 @@ describe Kaminari::ActiveRecordExtension do
       subject { User.page 5 }
       it_should_behave_like 'blank page'
     end
+
+    describe 'ensure #order_values is preserved' do
+      subject { User.order('id').page 1 }
+      its(:order_values) { should == ['id'] }
+    end
   end
 
   describe '#per' do