Woocommerce：尽管应用了分类标准，但最后仍对缺货产品进行分类

Question

我已经能够使用此代码段使用默认排序在最后显示缺货产品：

/**
 * @snippet       Order out of stock products at the end - WooCommerce
 * @author        Sebastian Velandia
 * @compatible    WooCommerce 3.8.0
 */
add_filter('posts_clauses', 'order_by_stock_status');
function order_by_stock_status($posts_clauses) {
    global $wpdb;
    // only change query on WooCommerce loops
    if (is_woocommerce() && (is_shop() || is_product_category() || is_product_tag() || is_product_taxonomy())) {
        $posts_clauses['join'] .= " INNER JOIN $wpdb->postmeta istockstatus ON ($wpdb->posts.ID = istockstatus.post_id) ";
        $posts_clauses['orderby'] = " istockstatus.meta_value ASC, " . $posts_clauses['orderby'];
        $posts_clauses['where'] = " AND istockstatus.meta_key = '_stock_status' AND istockstatus.meta_value <> '' " . $posts_clauses['where'];
    }
    return $posts_clauses;
}

这对默认排序有效，但是当您应用其他排序标准（例如按价格）时，它将停止工作并且缺货产品从目录的开头再次可见。

尽管在 woocommerce 目录中应用了排序，但如何修复此代码段以始终在最后显示缺货产品？

Answer 1

所以这似乎在测试中起作用。 当您更改商店页面上的 WooCommerce 排序顺序时，orderby 子句将被排序所取代。 因此，这使用过滤器woocommerce_get_catalog_ordering_args到 append 在从下拉列表中选择之前对您的 orderby function 进行所有排序查询。

add_filter('woocommerce_get_catalog_ordering_args', 'dd_catalog_order');
function dd_catalog_order(){
    add_filter('posts_clauses', 'keep_order_by_stock_status');
}

function keep_order_by_stock_status($posts_clauses){
    $posts_clauses['orderby'] = " istockstatus.meta_value ASC, " . $posts_clauses['orderby'];
    return $posts_clauses;    
}

Answer 2

这段代码对我有用（放入你主题的 functions.php）

/**
* 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($this, 'order_by_stock_status'), 2000);
}
}
public function order_by_stock_status($posts_clauses)
{
global $wpdb;
// only change query on WooCommerce loops
if (is_woocommerce() && (is_shop() || is_product_category() || is_product_tag())) {
$posts_clauses['join'] .= " INNER JOIN $wpdb->postmeta istockstatus ON ($wpdb->posts.ID = istockstatus.post_id) ";
$posts_clauses['orderby'] = " istockstatus.meta_value ASC, " . $posts_clauses['orderby'];
$posts_clauses['where'] = " AND istockstatus.meta_key = '_stock_status' AND istockstatus.meta_value <> '' " . $posts_clauses['where'];
}
return $posts_clauses;
}
}
new iWC_Orderby_Stock_Status;
/**
* END - Order product collections by stock status, instock products first.
*/