Made stats page efficient.

app/controllers/stats_controller.rb

@@ -1,5 +1,5 @@
 class StatsController < ApplicationController
   def index
-    @articles = Article.most_voted.paginate(:page => params[:page], :include => :votes)
+    @articles = Article.most_voted.paginate(:page => params[:page], :include => [:votes])
   end
 end

app/models/article.rb

@@ -5,10 +5,10 @@ class Article < ActiveRecord::Base
   named_scope :most_voted, :order => "articles.votes_count DESC"
 
   def causes
-    votes.causing.map{ |v| v.things }.flatten.sort.uniq
+    votes.select{ |v| v.effect == "cause" }.map{ |v| v.things }.flatten.sort.uniq
   end
 
   def preventors
-    votes.preventing.map{ |v| v.things }.flatten.sort.uniq
+    votes.select{ |v| v.effect = "prevent" }.map{ |v| v.things }.flatten.sort.uniq
   end
 end

app/views/stats/index.html.erb

@@ -7,8 +7,8 @@
   </tr>
   <% @articles.each do |article| %>
     <tr>
-      <td><%= h(truncate(article.title, 50)) %></td>
-      <td><%= article.votes.count %></td>
+      <td><%= h(truncate(article.title, :length => 50)) %></td>
+      <td><%= article.votes.length %></td>
       <td><%= h(article.causes * ", ") %></td>
       <td><%= h(article.preventors * ", ") %></td>
     </tr>