reduce db quries on aspects#index

app/controllers/aspects_controller.rb

@@ -31,7 +31,7 @@ class AspectsController < ApplicationController
       @aspect_ids = @aspects.map{|a| a.id}
 
       @posts = StatusMessage.joins(:aspects).where(:pending => false,
-               :aspects => {:id => @aspect_ids}).includes(:comments, :photos, :likes, :dislikes).select('DISTINCT `posts`.*').paginate(
+               :aspects => {:id => @aspect_ids}).includes(:aspects, :post_visibilities, :comments, :photos, :likes, :dislikes).select('DISTINCT `posts`.*').paginate(
                :page => params[:page], :per_page => 15, :order => sort_order + ' DESC')
       @fakes = PostsFake.new(@posts)
 

app/helpers/application_helper.rb

@@ -21,13 +21,13 @@ module ApplicationHelper
 
   def aspects_with_post aspects, post
     aspects.select do |aspect|
-      PostVisibility.exists?(:aspect_id => aspect.id, :post_id => post.id)
+      aspect.has_post?(post)
     end
   end
 
   def aspects_without_post aspects, post
     aspects.reject do |aspect|
-      PostVisibility.exists?(:aspect_id => aspect.id, :post_id => post.id)
+      aspect.has_post?(post)
     end
   end
 

app/models/aspect.rb

@@ -21,6 +21,14 @@ class Aspect < ActiveRecord::Base
     name.strip!
   end
 
+  def has_post? post
+    post_ids = post_visibilities.each { |pv| pv.post_id }
+    post_ids.each { |id|
+      return true if id == post.id
+    }
+    return false
+  end
+
   def to_s
     name
   end