If you want to sort your products according to their stock status,just add this code to child theme functions.php and all “in stock” products will be displayed first.
/** * 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. */