Im正在定制WooCommerce签出，添加了一个下拉字段，可以获取用户的元键，并在签出页面中显示为选择选项。我还设法在签出后将所选选项保存到订单中。但是，该选项在自定义字段中显示为整数，而不是文本。

以下代码是我的发展，希望有人能指导我。

检索用户元键并显示为下拉选项

add_action(\'woocommerce_after_order_notes\', \'wps_add_select_checkout_field\');
function wps_add_select_checkout_field( $checkout ) {

    $user_id = get_current_user_id(); 
    $vessel_one = get_user_meta( $user_id, \'vessel_one\', true ); 
    $vessel_two = get_user_meta( $user_id, \'vessel_two\', true ); 
    $vessel_three = get_user_meta( $user_id, \'vessel_three\', true ); 
    $vessel_four = get_user_meta( $user_id, \'vessel_four\', true ); 
    $vessel_five = get_user_meta( $user_id, \'vessel_five\', true );  

    woocommerce_form_field( \'order_vessel\', array(
        \'type\'          => \'select\',
        \'class\'         => array( \'wps-drop\' ),
        \'label\'         => __( \'Select a Vessel\' ),
        \'options\'       => array( $vessel_one, $vessel_two, $vessel_three, $vessel_four, $vessel_five )
 ),
    $checkout->get_value( \'order_vessel\' ));
}

将值保存到订单上的自定义字段中

add_action(\'woocommerce_checkout_update_order_meta\', \'wps_select_checkout_field_update_order_meta\');
 function wps_select_checkout_field_update_order_meta( $order_id ) {
   if ($_POST[\'order_vessel\']) update_post_meta( $order_id, \'order_vessel\', esc_attr($_POST[\'order_vessel\']));
 }

我希望有人能告诉我如何保存值，而不是将其转换为整数。提前非常感谢您。

\'options\'     => array(
    \'option_a\' => __(\'option a\', \'woocommerce\' ),
    \'option_b\' => __(\'option b\', \'woocommerce\' )
    )
);

\'options\'       => array(     
                 $vessel_one => __($vessel_one, \'woocommerce\' ),
                 $vessel_two => __($vessel_two, \'woocommerce\' ),
                 $vessel_three => __($vessel_three, \'woocommerce\' ),
                 $vessel_four => __($vessel_four, \'woocommerce\' ),
                 $vessel_five => __($vessel_five, \'woocommerce\' )
                )