Fixed redirect after post update

app/controllers/posts_controller.rb

@@ -35,7 +35,7 @@ class PostsController < ApplicationController
   def update
     if @post.update_attributes(params[:post])
       flash[:notice] = "Post was successfully updated."
-      redirect_to topic_path(@post.topic)
+      redirect_to topic_path(@post.topic, :page => @post.topic.posts.page.per(10).num_pages, :anchor => @post.id)
     end
   end