我已经成功实现了此代码,以使用Ajax从购物车中删除产品.但这不适用于“可变产品”.

/**
 * Remove Cart via Ajax
 */
function product_remove() {
    global $wpdb, $woocommerce;
    session_start();
    $cart = WC()->instance()->cart;
    $id = $_POST['product_id'];
    $cart_id = $cart->generate_cart_id($id);
    $cart_item_id = $cart->find_product_in_cart($cart_id);
    if($cart_item_id){
       $cart->set_quantity($cart_item_id,0);
    }
}
add_action( 'wp_ajax_product_remove', 'product_remove' );
add_action( 'wp_ajax_nopriv_product_remove', 'product_remove' );

也许我需要将$variation_id传递给$cart_id,但我不知道该怎么做.

解决方法:

使用$cart_item_key而非$product_id在购物车上创建链接.

然后,在服务器端,您无需使用$cart-> generate_cart_id($id);.方法,因为您已经拥有它.

请参阅对我有用的示例：

首先,创建购物车：

// This is the logic that create the cart
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) { ?>
    <li class="<?php echo esc_attr( apply_filters( 'woocommerce_mini_cart_item_class', 'mini_cart_item', $cart_item, $cart_item_key ) ); ?>">
        // Remove product link
        <a href="#" onclick="return js_that_call_your_ajax(this);" data-product_id="<?php echo esc_attr( $cart_item_key ); ?>">&times;</a>
        // Other product info goes here...
    </li>
<?php }

现在在服务器端进行修改：

/**
 * Remove Cart via Ajax
 */
function product_remove() {
    global $wpdb, $woocommerce;
    session_start();
    $cart = WC()->instance()->cart;
    $cart_id = $_POST['product_id']; // This info is already the result of generate_cart_id method now
    /* $cart_id = $cart->generate_cart_id($id); // No need for this! :) */
    $cart_item_id = $cart->find_product_in_cart($cart_id);
    if($cart_item_id){
       $cart->set_quantity($cart_item_id,0);
    }
}
add_action( 'wp_ajax_product_remove', 'product_remove' );
add_action( 'wp_ajax_nopriv_product_remove', 'product_remove' );

这对我来说很好！