khosb/modules/charge/classes/Model/Charge.php

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

/**
 * This class provides charge item capabilities.
 *
 * @package    Charge
 * @category   Models
 * @author     Deon George
 * @copyright  (c) 2009-2013 Open Source Billing
 * @license    http://dev.osbill.net/license.html
 */
class Model_Charge extends ORM_OSB {
	// Charge doesnt use the update column
	protected $_updated_column = FALSE;

	protected $_serialize_column = array(
		'attributes',
	);

	protected $_belongs_to = array(
		'account'=>array(),
	);

	protected $_display_filters = array(
		'date_orig'=>array(
			array('Config::date',array(':value')),
		),
		'amount'=>array(
			array('Currency::display',array(':value')),
		),
	);

	/**
	 * Render some details for specific calls, eg: invoice
	 */
	public function details($type) {
		switch ($type) {
			case 'invoice_detail_items':
				return array('Other Charge'=>sprintf('%s (%s@%s)',$this->description,$this->quantity,Currency::display($this->amount)));

			default:
				throw new Kohana_Exception('Unkown detail request :type',array(':type'=>$type));
		}
	}

	public function total($format=FALSE) {
		$result = $this->quantity * $this->amount;

		if ($this->taxable)
			$result = Tax::add($result);

		return $format ? Currency::display($result) : $result;
	}
}
?>