public function parentCategoriesAreActive()
    {
        $treeIsActive = true;
        $parentCategoryList = $this->getParentCategories();
        while ($category = $parentCategoryList->Next()) {
            if (false === $category->fieldActive) {
                $treeIsActive = false;
                break;
            }
        }

        return $treeIsActive;
    }