00001 <?php 00002 /** 00003 * Magento 00004 * 00005 * NOTICE OF LICENSE 00006 * 00007 * This source file is subject to the Open Software License (OSL 3.0) 00008 * that is bundled with this package in the file LICENSE.txt. 00009 * It is also available through the world-wide-web at this URL: 00010 * http://opensource.org/licenses/osl-3.0.php 00011 * If you did not receive a copy of the license and are unable to 00012 * obtain it through the world-wide-web, please send an email 00013 * to license@magentocommerce.com so we can send you a copy immediately. 00014 * 00015 * DISCLAIMER 00016 * 00017 * Do not edit or add to this file if you wish to upgrade Magento to newer 00018 * versions in the future. If you wish to customize Magento for your 00019 * needs please refer to http://www.magentocommerce.com for more information. 00020 * 00021 * @category Mage 00022 * @package Mage_Core 00023 * @copyright Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com) 00024 * @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) 00025 */ 00026 00027 00028 /** 00029 * Config data model 00030 * 00031 * @category Mage 00032 * @package Mage_Core 00033 */ 00034 class Mage_Core_Model_Config_Data extends Mage_Core_Model_Abstract 00035 { 00036 00037 /** 00038 * Varien model constructor 00039 */ 00040 protected function _construct() 00041 { 00042 $this->_init('core/config_data'); 00043 } 00044 00045 /** 00046 * Add availability call after load as public 00047 */ 00048 public function afterLoad() 00049 { 00050 $this->_afterLoad(); 00051 } 00052 00053 /** 00054 * Check if config data value was changed 00055 * 00056 * @return bool 00057 */ 00058 public function isValueChanged() 00059 { 00060 return $this->getValue() != $this->getOldValue(); 00061 } 00062 00063 /** 00064 * Get old value from existing config 00065 * 00066 * @return string 00067 */ 00068 public function getOldValue() 00069 { 00070 $storeCode = $this->getStoreCode(); 00071 $websiteCode = $this->getWebsiteCode(); 00072 $path = $this->getPath(); 00073 if ($websiteCode) { 00074 return Mage::app()->getWebsite($websiteCode)->getConfig($path); 00075 } 00076 if ($storeCode) { 00077 return Mage::app()->getStore($storeCode)->getConfig($path); 00078 } 00079 return (string) Mage::getConfig()->getNode('default/' . $path); 00080 } 00081 }