add ar associations monkey patch

lib/rails23_ruby193_ar_associations_monkey_patch.rb

@@ -0,0 +1,13 @@
+# Finally, we have this innocuous looking patch.  Without it, queries like this: current_account.tickets.recent.count
+# would instantiate AR objects all (!!) tickets in the account, not merely return a count of the recent ones.
+# See https://rails.lighthouseapp.com/projects/8994/tickets/5410-multiple-database-queries-when-chaining-named-scopes-with-rails-238-and-ruby-192
+# (The patch in that lighthouse bug was not, in fact, merged in).
+module ActiveRecord
+  module Associations
+    class AssociationProxy   
+      def respond_to_missing?(meth, incl_priv)
+        false
+      end
+    end
+  end
+end