每次單擊添加到購物車按鈕時(shí)，我都想添加客戶選擇的產(chǎn)品數(shù)量的項(xiàng)目，我嘗試使用可變產(chǎn)品修改產(chǎn)品數(shù)量，woocommerce_add_to_cart_validation但它會(huì)將可變產(chǎn)品兩次添加到購物車中：function so_validate_add_cart_item( $passed, $product_id, $quantity, $variation_id = '', $variations= '' ) {       global $product;   $product =  new WC_Product($product_id);   if(!$variation_id) {       WC()->cart->add_to_cart( $product_id, ($quantity *3) - $quantity );    } else {       WC()->cart->add_to_cart( $variation_id, ($quantity *3) );     }    // do your validation, if not met switch $passed to false    return $passed;}add_filter( 'woocommerce_add_to_cart_validation', 'so_validate_add_cart_item', 10, 5 );