Simple Rails-like templating for CodeIgniter

Layout.php

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class Layout
{
  
  // The CodeIgniter instance
  static var $ci;
  
  // Name of out layout file
  var $layout;
  
  function __construct($layout = "default_layout")
  {
    $ci =& get_instance();
    $this->layout = $layout;
  }
  
  /**
   * The layout may differ per controller. If this is the case and the 
   * library is already autoloaded, we can use this function to change
   * the layout that's loaded for that controller group.
   */
  function setLayout($layout)
  {
    $this->layout = $layout;
  }
  
  /**
   * @param view     The view file to be loaded into the template.
   * @param data     Data accompanying the view; conventionally the $data array.
   * @param suppress Returns the Layout as a string; for AJAX, maybe.
   * @return nothing or the string of HTML if `suppress` is true
   */
  function view($view, $data=null, $suppress=false)
  {
    $sub_view['content_for_layout'] = $ci->load->view($view, $data, true);
    
    if ($suppress)
    {
        $output = $ci->load->view($this->layout, $sub_view, true);
        return $output;
    }
    else
    {
        $ci->load->view($this->layout, $sub_view, false);
    }
  }
}