From f2b5e20840e35d5d23c3510a688fd2b1090a50fd Mon Sep 17 00:00:00 2001
From: Chris Hunt <c@chrishunt.co>
Date: Sat, 25 May 2013 17:37:23 -0700
Subject: [PATCH] Add Topic#max_post_number to find max post number

---
 app/models/topic.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/models/topic.rb b/app/models/topic.rb
index 9563ddc2ec3..bd4eb19ff55 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -476,6 +476,10 @@ class Topic < ActiveRecord::Base
     first_post_number
   end
 
+  def max_post_number
+    posts.maximum(:post_number).to_i
+  end
+
   def move_posts(moved_by, post_ids, opts)
 
     topic = nil