我目前正在使用 WooCommerce 创建一个网上商店，我制作了这个购物车，您可以随时访问任何页面，您可以更新购物车本身内的产品数量。每当我这样做时，问题就会发生，一些值会被弄乱。例如，当我尝试获取 WC()->cart->total 时，它返回 0。

但是当我转到结帐页面时，它显示了所有正确的购物车数据，所以这让我觉得我缺少一些 action 我必须在调整购物车中的内容后运行。我一直在寻找 set_quantity() 函数，它使用 $this->calculate_totals(); 自动刷新总数(也手动尝试过)。

Ajax 函数:

public function set_quantity($direction = false, $product_id) {
    $response = array();
    $justOne = false;

    if($_GET['data']['direction'] && $_GET['data']['product_id']) {
        $direction = $_GET['data']['direction'];
        $product_id = $_GET['data']['product_id'];
        $justOne = true;
    }

    foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
        $_product = $values['data'];
        if ($product_id == $_product->id) {

            if($justOne && $direction == 'minus') {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] - 1, true);
                $response['success']['quantity'] = $values['quantity'] - 1;
            } else if($justOne && $direction == 'plus') {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] + 1, true);
                $response['success']['quantity'] = $values['quantity'] + 1;
            } else {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] + $direction, true);
            }

            $response['success']['line_total'] = '€ '.number_format((float)$response['success']['quantity'] * $_product->price, 2, '.', '');
            $response['success']['cart_count'] = WC()->cart->get_cart_contents_count();
            $response['success']['total'] = number_format((float)WC()->cart->total, 2, '.', '');
            die(json_encode($response));
        }
    }
    return false;
}

最佳答案

使用这个修改过的 ajax 函数。我已经测试过了。它会起作用。

修改后的 Ajax 函数:

public function set_quantity($direction = false, $product_id) {
    $response = array();
    $justOne = false;

    if($_GET['data']['direction'] && $_GET['data']['product_id']) {
        $direction = $_GET['data']['direction'];
        $product_id = $_GET['data']['product_id'];
        $justOne = true;
    }

    foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
        $_product = $values['data'];
        if ($product_id == $_product->id) {

            if($justOne && $direction == 'minus') {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] - 1, true);
                $response['success']['quantity'] = $values['quantity'] - 1;
            } else if($justOne && $direction == 'plus') {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] + 1, true);
                $response['success']['quantity'] = $values['quantity'] + 1;
            } else {
                WC()->cart->set_quantity($cart_item_key, $values['quantity'] + $direction, true);
            }

            if ( ! defined( 'WOOCOMMERCE_CART' ) ) {
                define( 'WOOCOMMERCE_CART', true );
            }
            WC()->cart->calculate_totals();

            $response['success']['line_total'] = '€ '.number_format((float)$response['success']['quantity'] * $_product->price, 2, '.', '');
            $response['success']['cart_count'] = WC()->cart->get_cart_contents_count();
            $response['success']['total'] = number_format((float)WC()->cart->total, 2, '.', '');
            die(json_encode($response));
        }
    }
    return false;
}

关于php - WooCommerce ajax 更新搞乱了值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39223355/