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给分类增加一个属性的步骤

1：

<?xml version="1.0"?>

<config>     <modules>         <Tw_Attribute>             <active>true</active>             <codePool>community</codePool>         </Tw_Attribute>     </modules> </config>

2

<?xml version="1.0"?>

<config>     <modules>         <Tw_Attribute>             <version>0.0.1</version>         </Tw_Attribute>     </modules>       <global>         <resources>             <attribute_setup>                 <setup>                     <module>Tw_Attribute</module>                     <class>Mage_Catalog_Model_Resource_Eav_Mysql4_Setup</class>                 </setup>                 <connection>                     <use>core_setup</use>                 </connection>             </attribute_setup>             <attribute_write>                 <connection>                     <use>core_write</use>                 </connection>             </attribute_write>             <attribute_read>                 <connection>                     <use>core_read</use>                 </connection>             </attribute_read>         </resources>     </global> </config>

3

<?php

/**  * aheadWorks Co.  *  * NOTICE OF LICENSE  *  * This source file is subject to the EULA  * that is bundled with this package in the file LICENSE.txt.  * It is also available through the world-wide-web at this URL:  * http://ecommerce.aheadworks.com/LICENSE-L.txt  *  * @category   AW  * @package    AW_Blog  * @copyright  Copyright (c) 2009-2010 aheadWorks Co. (http://www.aheadworks.com)  * @license    http://ecommerce.aheadworks.com/LICENSE-L.txt  */ class Tw_Attribute_Helper_Data extends Mage_Core_Helper_Abstract {     }

4

\sql\attribute_setup\mysql4-install-0.0.1.php

<?php

$installer = $this; $installer->startSetup(); $entityTypeId     = $installer->getEntityTypeId('catalog_category'); $attributeSetId   = $installer->getDefaultAttributeSetId($entityTypeId); $attributeGroupId = $installer->getDefaultAttributeGroupId($entityTypeId, $attributeSetId); $installer->addAttribute('catalog_category', 'productimg',  array(     'type'     => 'varchar',     'label'    => 'Product Img',     'input'    => 'text',     'global'   => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,     'visible'           => true,     'required'          => false,     'user_defined'      => false,     'default'           => '' )); $installer->addAttributeToGroup(     $entityTypeId,     $attributeSetId,     $attributeGroupId,     'productimg',     '11' //last Magento's attribute position in General tab is 10 ); $attributeId = $installer->getAttributeId($entityTypeId, 'productimg'); $installer->run(" INSERT INTO `{$installer->getTable('catalog_category_entity_int')}` (`entity_type_id`, `attribute_id`, `entity_id`, `value`)     SELECT '{$entityTypeId}', '{$attributeId}', `entity_id`, '1'         FROM `{$installer->getTable('catalog_category_entity')}`; "); //this will set data of your custom attribute for root category Mage::getModel('catalog/category')     ->load(1)     ->setImportedCatId(0)     ->setInitialSetupFlag(true)     ->save(); //this will set data of your custom attribute for default category Mage::getModel('catalog/category')     ->load(2)     ->setImportedCatId(0)     ->setInitialSetupFlag(true)     ->save(); $installer->endSetup();

OK。

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