Fix bug where links to posts weren't being tracked

app/models/topic_link.rb

@@ -53,6 +53,15 @@ class TopicLink < ActiveRecord::Base
 
             topic_id = route[:topic_id]
             post_number = route[:post_number] || 1
+
+            # Store the canonical URL
+            topic = Topic.where(id: topic_id).first
+
+            if topic.present?
+              url = "#{Discourse.base_url}#{topic.relative_url}"
+              url << "/#{post_number}" if post_number.to_i > 1
+            end
+
           end
 
           # Skip linking to ourselves