Simplistic Kohana3 View_Model attempt

View_Model

<?php defined('SYSPATH') or die('No direct script access.');
/**
 * 
 * Simplistic View_Model attempt for Kohana 3, Based on Cambiata's viewmodel
 * @author peebeebee
 */


class View extends Kohana_View {

	const prefix = 'var_';
	
	public function before() { }
	
	public function after() { }
	
	public function __construct($file = NULL, array $data = NULL)
	{
		$this->before();
		$this->set($this->get_modeldata());
		if($file === NULL) 
			$file = $this->get_viewfile($file);		
		parent::__construct($file, $data);
	}
	
	private function get_viewfile($file)
	{
		$segments = explode('_', strtolower(get_class($this)));
		if (count($segments) > 1) array_shift($segments);
		return implode('/', $segments);
	}
		
	private function get_modeldata()
	{
		$data = array();
		$reflection = new ReflectionClass(get_class($this));
		
		$public_properties = $reflection->getProperties(ReflectionProperty::IS_PUBLIC);
		foreach ($public_properties as $property) 
		{
			$key = $this->create_key($property->name);
			if($key) $data[$key] = $this->{$property->name};
		}
		
		$public_methods = $reflection->getMethods(ReflectionProperty::IS_PUBLIC);
		foreach ($public_methods as $public_method) 
		{
			$key = $this->create_key($public_method->name);
			if($key) $data[$key] = $this->{$public_method->name}();
		}
		return $data;
	}
	
	private function create_key($datakey)
	{
		$prefix = strlen(self::prefix);
		$pos = stripos($datakey, self::prefix);
		return ($pos !== FALSE) ? substr($datakey, $pos+$prefix) : FALSE;
	}
	
	public function render($file = NULL)
	{
		$rendered = parent::render($file);
		$this->after();
		return $rendered;
	}
}

Can't use the standard factory method for now. But that could be easily fixed.