如何解决WooCommerce添加售罄商品后置排序功能后的属性读取警告

数据老陈

2026-10-4

问题原因

你当前使用的售罄商品排序代码未限制仅作用于商品列表主查询，会修改所有前台WordPress查询（包括导航菜单、侧边栏小工具、页面查询等非商品查询），错误的JOIN和WHERE条件会导致这些非商品查询返回空结果，get_queried_object()拿到空值就会触发读取属性的警告。

解决方案

直接替换你现有的排序代码为以下修正版即可，保留排序功能的同时消除警告：

/**
* Sorting out of stock WooCommerce products - Order product collections by stock status, in-stock products first.
*/
class iWC_Orderby_Stock_Status
{
public function __construct()
{
// Check if WooCommerce is active
if (in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins')))) {
add_filter('posts_clauses', array($this, 'order_by_stock_status'), 2000, 2);
}
}
public function order_by_stock_status($posts_clauses, $query)
{
global $wpdb;
// 仅修改WooCommerce商品列表主查询
if (is_woocommerce() && (is_shop() || is_product_category() || is_product_tag()) && $query->is_main_query()) {
$posts_clauses['join'] .= " LEFT JOIN $wpdb->postmeta istockstatus ON ($wpdb->posts.ID = istockstatus.post_id AND istockstatus.meta_key = '_stock_status') ";
$posts_clauses['orderby'] = " istockstatus.meta_value ASC, " . $posts_clauses['orderby'];
$posts_clauses['where'] .= " AND (istockstatus.meta_value <> '' OR istockstatus.meta_value IS NULL) ";
}
return $posts_clauses;
}
}
new iWC_Orderby_Stock_Status;
/**
* END - Order product collections by stock status, instock products first.
*/