Magento产品页面包屑导航(Breadcrumb)修正

如果从Category产品列表中进入Product，则面包屑导航中含有Category Path; 否则，当从首页，或搜索结果中，或者其他什么地方进入，则缺少之。我想，可能是Magento支持一个产品放入多个Category的缘故吧。Magento产品页面包屑导航(Breadcrumb)修正不管怎么样，产品页中缺少了Category Path，用户体验不大好。

修正的方法，找到文件

app/code/core/Mage/Catalog/Helper/Data.php

　　复制一份到local代码池

view sourceprint?1 app/code/local/Mage/Catalog/Helper/Data.php

　　在函数getBreadcrumbPath的开始部分，加上如下的代码逻辑

public function getBreadcrumbPath()
{
if ($this->getProduct() && !$this->getCategory()) { 
$_categoryIds = $this->getProduct()->getCategoryIds(); 

if ($_categoryId = $_categoryIds[0]) { 
$_category = Mage::getModel('catalog/category')->load($_categoryId); 
Mage::register('current_category', $_category); 
} 

} 
if (!$this->_categoryPath) {

$path = array();
if ($category = $this->getCategory()) {
$pathInStore = $category->getPathInStore();
$pathIds = array_reverse(explode(',', $pathInStore));

$categories = $category->getParentCategories();

// add category path breadcrumb
foreach ($pathIds as $categoryId) {
if (isset($categories[$categoryId]) && $categories[$categoryId]->getName()) {
$path['category'.$categoryId] = array(
'label' => $categories[$categoryId]->getName(),
'link' => $this->_isCategoryLink($categoryId) ? $categories[$categoryId]->getUrl() : ''
);
}
}
}

if ($this->getProduct()) {
$path['product'] = array('label'=>$this->getProduct()->getName());
}

$this->_categoryPath = $path;
}
return $this->_categoryPath;

}