无法在Woo商务购物车部分的标题下显示产品自定义字段

I have created some custom fields for my product in wocommerce. I want to add those custom fields under title in cart page. This is the code I am using but with no result.

add_filter( 'woocommerce_cart_item_name', 'add_isbn_in_cart', 20, 3);

function add_isbn_in_cart( $title, $values, $cart_item_key ) {

    $custom_isbn = get_post_meta( get_the_ID(), '_isbn_field', true );  
    return $title . $custom_isbn;

}

get_the_ID() would be returning the ID of the cart page, whereas you need the ID of the product post. You need to get the ID from the $values array.

$custom_isbn = get_post_meta( $values['product_id'], '_isbn_field', true );