refector collection

.gitignore

@@ -9,3 +9,4 @@
 
 # rspec failure tracking
 .rspec_status
+.DS_Store

lib/simple_controller/base_controller.rb

@@ -49,13 +49,17 @@ class SimpleController::BaseController < ::InheritedResources::Base
     association
   end
 
-  def collection
-    get_collection_ivar || set_collection_ivar(
-      after_association_chain(end_of_association_chain).ransack(
+  def ransack_paginate(association)
+    association.ransack(
       params[:q]
     ).result.distinct.paginate(
       page: params[:page], per_page: params[:per_page]
     )
-    )
+  end
+
+  def collection
+    association = super
+    association = after_association_chain(association)
+    ransack_paginate(association)
   end
 end