gistfile1.php

<?
class PostController extends Controller
{
	public function index($post_id)
	{
		if (is_numeric($post_id))
		{
			$post=Model::Instance('blog.post',$post_id);
			if ($post)
			{
				switch($post->type)
				{
					case 'image':
						$this->view='post/image';
						break;
					case 'video':
						$this->view='post/video';
						break;
				}
				
				return array('post' => $post);
			}
		}
		
		throw new NotFoundException();
	}
}