Possible performance gain from not hitting posts relation

app/controllers/application_controller.rb

@@ -26,7 +26,7 @@ class ApplicationController < ActionController::Base
     if user_signed_in?
       @aspect = nil
       @object_aspect_ids = []
-      @all_aspects = current_user.aspects.includes(:aspect_memberships)
+      @all_aspects = current_user.aspects.includes(:aspect_memberships, :post_visibilities)
       @notification_count = Notification.for(current_user, :unread =>true).count
       @user_id = current_user.id
     end

app/helpers/application_helper.rb

@@ -22,13 +22,13 @@ module ApplicationHelper
 
   def aspects_with_post aspects, post
     aspects.select do |aspect|
-      aspect.post_ids.include?(post.id)
+      aspect.post_visibilities.detect{|pv| pv.post_id == post.id}
     end
   end
 
   def aspects_without_post aspects, post
     aspects.reject do |aspect|
-      aspect.post_ids.include?(post.id)
+      aspect.post_visibilities.detect{|pv| pv.post_id == post.id}
     end
   end