fixes #748

app/models/post_version.rb

@@ -28,6 +28,10 @@ class PostVersion < ActiveRecord::Base
         q = q.where("post_id = ?", params[:post_id].to_i)
       end
 
+      if params[:start_id].present?
+        q = q.where("id <= ?", params[:start_id].to_i)
+      end
+
       q
     end
   end

app/views/post_versions/_listing.html.erb

@@ -19,7 +19,7 @@
     <tbody>
       <% post_versions.each do |post_version| %>
         <tr id="post-version-<%= post_version.id %>">
-          <td><%= link_to("#{post_version.post_id}.#{post_version.id}", post_path(post_version.post_id)) %></td>
+          <td><%= link_to(post_version.post_id, post_path(post_version.post_id)) %>.<%= link_to(post_version.id, post_versions_path(:search => {:start_id => post_version.id})) %></td>
           <td><%= compact_time(post_version.updated_at) %></td>
           <td>
             <% if post_version.updater %>