在在线教程的帮助下，我正在尝试创建一个静态块，在主类别页面（花园）的网格中显示子类别（Swing Seats ... Weathercovers）。我已将 Navigation.php 复制并修改到本地文件夹中，并在同一位置创建了一个 subcategory_listing.phtml。
但 ...
帮助！我收到以下错误...谁能帮帮我？？？
致命错误：调用非对象中的成员函数 count() ....../template/catalog/navigation/subcategory_listing.phtml 第 5 行
在 subcategory_listing.phtml 文件中，我在前几行中...
<div class="category-products">
<ul class="products-grid">
<?php
$_categories=$this->getCurrentChildCategories();
if($_categories->count()):
$categorycount = 0;
foreach ($_categories as $_category):
if($_category->getIsActive()):
$cur_category=Mage::getModel('catalog/category')->load($_category->getId());
$layer = Mage::getSingleton('catalog/layer');
$layer->setCurrentCategory($cur_category);
$catName = $this->getCurrentCategory()->getName();
if ($categorycount == 0){
$class = "first";
}
elseif ($categorycount == 3){
$class = "last";
}
else{
$class = "";
}
?>
<li class="item <?=$class?>">
<a href="<?php echo $_category->getURL() ?>" title="<?php echo $this->htmlEscape($_category->getName()) ?>"><img src="<?php echo $_category->getImageUrl() ?>" width="100" alt="<?php echo $this->htmlEscape($_category->getName()) ?>" /></a>
<h2><a href="<?php echo $_category->getURL() ?>" title="<?php echo $this->htmlEscape($_category->getName()) ?>"><?php echo $this->htmlEscape($_category->getName()) ?></a></h2>
</li>
<?php
endif;
if($categorycount == 3){
$categorycount = 0;
echo "</ul>\n\n<ul class=\"products-grid\">";
}
else{
$categorycount++;
}
endforeach;
endif;
?>
</ul>
</div>
这是我在 Navigation.php 中使用的代码
<?php
/**
* Magento
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@magentocommerce.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade Magento to newer
* versions in the future. If you wish to customize Magento for your
* needs please refer to http://www.magentocommerce.com for more information.
*
* @category Mage
* @package Mage_Catalog
* @copyright Copyright (c) 2013 Magento Inc. (http://www.magentocommerce.com)
* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
*/
/**
* Catalog navigation
*
* @category Mage
* @package Mage_Catalog
* @author Magento Core Team <core@magentocommerce.com>
*/
class Mage_Catalog_Block_Navigation extends Mage_Core_Block_Template
{
/**
* Category instance
*
* @var Mage_Catalog_Model_Category
*/
protected $_categoryInstance;
/**
* Current category key
*
* @var string
*/
protected $_currentCategoryKey;
/**
* Array of level position counters
*
* @var array
*/
protected $_itemLevelPositions = array();
/**
* Current child categories collection
*
* @var Mage_Catalog_Model_Resource_Category_Collection
*/
protected $_currentChildCategories;
/**
* Set cache data
*/
protected function _construct()
{
$this->addData(array('cache_lifetime' => false));
$this->addCacheTag(array(
Mage_Catalog_Model_Category::CACHE_TAG,
Mage_Core_Model_Store_Group::CACHE_TAG
));
}
/**
* Get Key pieces for caching block content
*
* @return array
*/
public function getCacheKeyInfo()
{
$shortCacheId = array(
'CATALOG_NAVIGATION',
Mage::app()->getStore()->getId(),
Mage::getDesign()->getPackageName(),
Mage::getDesign()->getTheme('template'),
Mage::getSingleton('customer/session')->getCustomerGroupId(),
'template' => $this->getTemplate(),
'name' => $this->getNameInLayout(),
$this->getCurrenCategoryKey()
);
$cacheId = $shortCacheId;
$shortCacheId = array_values($shortCacheId);
$shortCacheId = implode('|', $shortCacheId);
$shortCacheId = md5($shortCacheId);
$cacheId['category_path'] = $this->getCurrenCategoryKey();
$cacheId['short_cache_id'] = $shortCacheId;
return $cacheId;
}
/**
* Get current category key
*
* @return mixed
*/
public function getCurrenCategoryKey()
{
if (!$this->_currentCategoryKey) {
$category = Mage::registry('current_category');
if ($category) {
$this->_currentCategoryKey = $category->getPath();
} else {
$this->_currentCategoryKey = Mage::app()->getStore()->getRootCategoryId();
}
}
return $this->_currentCategoryKey;
}
/**
* Get categories of current store
*
* @return Varien_Data_Tree_Node_Collection
*/
public function getStoreCategories()
{
$helper = Mage::helper('catalog/category');
return $helper->getStoreCategories();
}
/**
* Retrieve child categories of current category
*
* @return Mage_Catalog_Model_Resource_Category_Collection
*/
public function getCurrentChildCategories()
{
$layer = Mage::getSingleton('catalog/layer');
$category = $layer->getCurrentCategory();
/* @var $category Mage_Catalog_Model_Category */
$collection = Mage::getModel('catalog/category')->getCollection();
/* @var $collection Mage_Catalog_Model_Resource_Eav_Mysql4_Category_Collection */
$collection->addAttributeToSelect('url_key')
->addAttributeToSelect('name')
->addAttributeToSelect('is_anchor')
->addAttributeToSelect('thumbnail')
->addAttributeToFilter('is_active', 1)
->addIdFilter($category->getChildren())
->setOrder('position', 'ASC')
->joinUrlRewrite()
->load();
$productCollection = Mage::getResourceModel('catalog/product_collection');
$layer->prepareProductCollection($productCollection);
$productCollection->addCountToCategories($collection);
return $collection;
}
谁能告诉我我需要做什么才能让它工作？
非常感谢