Kohana 3.1.x: Common controller [step 2]

Define parent controller:

<?php defined('SYSPATH') or die('No direct script access.');

class Controller_Common_Content extends Controller_Template {

 public $template                = '';
 public $template_name           = 'default';
 public $layout                  = 'default';

 public $save_auto_render        = null;

 public $content                 = '{Do something to generate content}';

 public function __construct(Request $request, Response $response) {
 parent::__construct($request, $response);

 $this->session = Session::instance();

 }

 public function before() {

 $this->save_auto_render = $this->auto_render;
 $this->auto_render = false;
 parent::before();
 $this->auto_render = $this->save_auto_render;

 if ($this->auto_render) {
 $this->template = View::factory('template/' . $this->template_name . '/' . $this->layout)
 ->bind('content', $this->content);

 }

 }

 public function action_view_html() {
 $path = $this->request->param('path');

 echo "PATH: $path";
 }

 public function after() {
 parent::after();

 if ($this->auto_render) {
 } else {
 $this->response->headers('content-type', 'application/json');
 echo json_encode($this->content);
 }

 }

}