paginate thread replies

app/controllers/forumthreads_controller.rb

@@ -7,6 +7,7 @@ class ForumthreadsController < ApplicationController
   end
 
   def show
+    @replies = @thread.replies.page(params[:page])
   end
 
   def edit

app/views/forumthreads/show.html.erb

@@ -21,9 +21,10 @@
 </div>
 <div id="replies">
   <h3><%= "#{pluralize(@thread.replies.length, 'reply')}." %></h3>
-  <% @thread.replies.each do |reply| %>
+  <% @replies.each do |reply| %>
     <%= render partial: "threadreplies/reply", locals: {reply: reply} %>
   <% end %>
+  <%= paginate @replies %>
   <% if @thread.can_write?(current_user) %>
     <%= render partial: "threadreplies/new", locals: {reply: Threadreply.new(forumthread: @thread)} %>
   <% else %>