将 Woocommerce 购物车项目自定义数据保存为订单项目元数据，将其显示在订单和电子邮件上

关于 Woocommerce。我有要添加到购物车的自定义数据。在functions.php 文件中，我有以下函数。

// Display cart item custom data in cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'display_cart_item_custom_on_cart_and_checkout', 10, 2 );
function display_cart_item_custom_on_cart_and_checkout( $cart_item_data, $cart_item ){
    
    if( isset($cart_item['custom_data']['label0']) && isset($cart_item['custom_data']['value0']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label0'],
            'value' => $cart_item['custom_data']['value0'],
        );
    }
    
    if( isset($cart_item['custom_data']['label']) && isset($cart_item['custom_data']['value']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label'],
            'value' => $cart_item['custom_data']['value'],
        );
    }

    if( isset($cart_item['custom_data']['label2']) && isset($cart_item['custom_data']['value2']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label2'],
            'value' => $cart_item['custom_data']['value2'],
        );
    }
    
    if( isset($cart_item['custom_data']['label3']) && isset($cart_item['custom_data']['value3']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label3'],
            'value' => $cart_item['custom_data']['value3'],
        );
    }
    
    if( isset($cart_item['custom_data']['label4']) && isset($cart_item['custom_data']['value4']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label4'],
            'value' => $cart_item['custom_data']['value4'],
        );
    }
    
    if( isset($cart_item['custom_data']['label5']) && isset($cart_item['custom_data']['value5']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label5'],
            'value' => $cart_item['custom_data']['value5'],
        );
    }
    
    if( isset($cart_item['custom_data']['label6']) && isset($cart_item['custom_data']['value6']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label6'],
            'value' => $cart_item['custom_data']['value6'],
        );
    }
    
    if( isset($cart_item['custom_data']['label7']) && isset($cart_item['custom_data']['value7']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label7'],
            'value' => $cart_item['custom_data']['value7'],
        );
    }
    
    if( isset($cart_item['custom_data']['label8']) && isset($cart_item['custom_data']['value8']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label8'],
            'value' => $cart_item['custom_data']['value8'],
        );
    }
    
    if( isset($cart_item['custom_data']['label9']) && isset($cart_item['custom_data']['value9']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label9'],
            'value' => $cart_item['custom_data']['value9'],
        );
    }
    
    if( isset($cart_item['custom_data']['label10']) && isset($cart_item['custom_data']['value10']) ) {
        $cart_item_data[] = array(
            'name' => $cart_item['custom_data']['label10'],
            'value' => $cart_item['custom_data']['value10'],
        );
    }
    return $cart_item_data;
}

这有效并且自定义数据显示在购物车中。但是，自定义数据不会显示在订单和订单电子邮件中。我在 Stackoverflow 上看到了几个为这个问题提供解决方案的答案，但我无法让它们适合我的情况。我参考的解决方案是。

在 Woocommerce 中保存并显示订单项自定义元数据 https://stackoverflow.com/questions/53687705/save-and-display-order-item-custom-meta-data-in-woocommerce

在 Woocommerce 购物车、结帐和订单上显示并保存添加的自定义购物车项目数据 https://stackoverflow.com/questions/54505642/display-and-save-added-custom-cart-item-data-on-woocommerce-cart-checkout-and-o

有人可以告诉我“我的”功能应该是什么吗？

谢谢。

首先，您可以这样优化和压缩您的函数：

// Display cart item custom data in cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'display_cart_item_custom_on_cart_and_checkout', 10, 2 );
function display_cart_item_custom_on_cart_and_checkout( $cart_item_data, $cart_item ){
    $keys = array('0','','2','3','4','5','6','7','8','9','10'); // Fields numbers part keys array
    
    // Loop through Fields numbers part keys array
    foreach( $keys as $key ) {
        if( isset($cart_item['custom_data']['label'.$key]) && isset($cart_item['custom_data']['value'.$key]) ) {
            $cart_item_data[] = array(
                'name' => $cart_item['custom_data']['label'.$key],
                'value' => $cart_item['custom_data']['value'.$key],
            );
        }
    }
    return $cart_item_data;
}

然后，要将所有自定义购物车商品数据保存为自定义订单商品元数据并在订单和电子邮件中的任何位置显示它，请使用以下命令：

// Save cart item custom data as order item meta data and display it everywhere in Orders and email notifications
add_action('woocommerce_checkout_create_order_line_item', 'save_as_custom_order_item_meta_data', 10, 4 );
function save_as_custom_order_item_meta_data( $item, $cart_item_key, $values, $order ) {
    $keys = array('0','','2','3','4','5','6','7','8','9','10'); // Fields numbers part keys array()
    
    // Loop through Fields numbers part keys array
    foreach( $keys as $key ) {
        if( isset( $values['custom_data']['label'.$key] ) && isset( $values['custom_data']['value'.$key] ) ) {
           $item->update_meta_data( $values['custom_data']['label'.$key], $values['custom_data']['value'.$key] );
        }
    }
}

代码位于活动子主题（或活动主题）的functions.php 文件中。它应该有效。