Để xóa đường dẫn danh mục cha mẹ khỏi url danh mục con  
Phương thức ghi đè 
lớp như bên dướiMage_Catalog_Model_Url
public function getCategoryRequestPath($category, $parentPath)
public function getCategoryRequestPath($category, $parentPath)
{
    $storeId = $category->getStoreId();
    $idPath = $this->generatePath('id', null, $category);
    $suffix = $this->getCategoryUrlSuffix($storeId);
    if (isset($this->_rewrites[$idPath])) {
        $this->_rewrite = $this->_rewrites[$idPath];
        $existingRequestPath = $this->_rewrites[$idPath]->getRequestPath();
    }
    if ($category->getUrlKey() == '') {
        $urlKey = $this->getCategoryModel()->formatUrlKey($category->getName());
    } else {
        $urlKey = $this->getCategoryModel()->formatUrlKey($category->getUrlKey());
    }
    $categoryUrlSuffix = $this->getCategoryUrlSuffix($category->getStoreId());
    // Code commented to remove parent category path from child category path
    //if (null === $parentPath) {
    //$parentPath = $this->getResource()->getCategoryParentPath($category);
    //}
    //elseif ($parentPath == '/') {
    $parentPath = '';
    //}
    $parentPath = Mage::helper('catalog/category')->getCategoryUrlPath($parentPath,
        true, $category->getStoreId());
    $requestPath = $parentPath . $urlKey . $categoryUrlSuffix;
    if (isset($existingRequestPath) && $existingRequestPath == $requestPath . $suffix) {
        return $existingRequestPath;
    }
    if ($this->_deleteOldTargetPath($requestPath, $idPath, $storeId)) {
        return $requestPath;
    }
    return $this->getUnusedPath($category->getStoreId(), $requestPath,
        $this->generatePath('id', null, $category)
    );
}
Sửa đổi mã dưới đây 
if (null === $parentPath) {
    $parentPath = $this->getResource()->getCategoryParentPath($category);
} elseif ($parentPath == '/') {
    $parentPath = '';
}
đến
//if (null === $parentPath) {
//    $parentPath = $this->getResource()->getCategoryParentPath($category);
//} elseif ($parentPath == '/') {
    $parentPath = '';
//}
               
              
Use Parent Category Path for Category URLstùy chọn ce magento không có ở đó