在 WooCommerce 中自动将订单项目自定义元数据添加到订单备注

Question

在 WooCommerce 中，with this code, 我在购买时使用产品自定义字段添加一些自定义元数据以订购商品。我还需要将一些自定义元数据自动添加到客户订单备注中（基本上是为了将其发送到我的运输履行服务）。

下面是我目前使用的代码：

add_action('woocommerce_checkout_create_order', 'before_checkout_create_order', 20, 2);
function before_checkout_create_order( $order, $data ) {

    $items_in_order=array();

    foreach( $order->get_items() as $item_id => $item ) {

        $product = $order->get_product_from_item( $item );

        $text = $product->get_sku();

        $bags_count = array(
            'neutral_bags' => 0,
            'bright_bags' => 0,
            'pastel_bags' => 0,
            'reg_tendons' => 0,
            'gid_tendons' => 0
        );

        $meta_key1  = __('Neutral Bags', 'woocommerce');
        $meta_key2  = __('Bright Bags', 'woocommerce');
        $meta_key3  = __('Pastel Bags', 'woocommerce');
        $meta_key4  = __('Reg Tendons', 'woocommerce');
        $meta_key5  = __('GID Tendons', 'woocommerce');

        $bags_count['neutral_bags'] += wc_get_order_item_meta( $item_id, $meta_key1, true );
        $bags_count['bright_bags']  += wc_get_order_item_meta( $item_id, $meta_key2, true );
        $bags_count['pastel_bags']  += wc_get_order_item_meta( $item_id, $meta_key3, true );
        $bags_count['reg_tendons']  += wc_get_order_item_meta( $item_id, $meta_key4, true );
        $bags_count['gid_tendons']  += wc_get_order_item_meta( $item_id, $meta_key5, true );

        $text .= ' | ' . $bags_count['neutral_bags'];
        $text .= ' | ' . $bags_count['bright_bags'];
        $text .= ' | ' . $bags_count['pastel_bags'];
        $text .= ' | ' . $bags_count['reg_tendons'];
        $text .= ' | ' . $bags_count['gid_tendons'];

        array_push( $items_in_order , $text );

    }

    $text = implode('<br/>', $items_in_order );

    // get customer note
    $note = $order->get_customer_note();

    // Merging existing customer note with bags count (if it exist)
    $note = empty( $note ) ? $text : $note . '<br/>' . $text . ' V1';

    // Set the new customer note before saving
    $order->set_customer_note( $note );

}

根据下面的屏幕截图，您会看到数据已保存到产品中，但未正确拉入订单备注部分。

任何想法为什么会这样？

Answer 1

由于这与您的其他问题和 my answer there 有关，因此 元键 有点不同：

• neutral_bag_count 元键替换为：Neutral Bags，
• bright_bag_count 元键替换为：Bright Bags。

更新：我已经完全重新审视了您现有的所有代码，避免重复，使其更加有效和紧凑。

我在一个函数中设置了您的自定义字段键和标签，我在所有其他挂钩函数中调用这些函数，现在我到处都使用 foreach 循环。如果你想改变一个标签，你只需要在这个实用函数中做一次。

新代码：

// Utility function (keys + translatable labels)
function bags_and_sheets_labels_keys(){
    $domain = 'woocommerce';
    return array(
        'neutral_bag' => __('Neutral Bags', $domain),
        'bright_bag'  => __('Bright Bags', $domain),
        'pastel_bag'  => __('Pastel Bags', $domain),
        'reg_tendon'  => __('Regular Tendon Sheets', $domain),
        'gid_tendon'  => __('GID Tendon Sheets', $domain),
    );
}

// Add custom fields to single product pages
add_action( 'woocommerce_before_add_to_cart_button', 'add_custom_fields_single_product', 20 );
function add_custom_fields_single_product(){
    global $product;
    $bags = bags_and_sheets_labels_keys();
    ?>
        <div class="product-custom-fields">
            <?php foreach($bags as $key => $value ): ?>
            <input type="text" placeholder="<?php echo $value; ?>" name="<?php echo $key; ?>">
            <?php endforeach; ?>
        </div>
        <div class="clear"></div>
    <?php
}

// Save custom fields to cart object
add_filter( 'woocommerce_add_cart_item_data', 'save_custom_fields_cart_item_data', 10, 2 );
function save_custom_fields_cart_item_data( $cart_item_data, $product_id ){
    $bags = bags_and_sheets_labels_keys();
    foreach($bags as $key => $value ):
        if(isset($_POST[$key]))
            $cart_item_data['custom_data'][$key] = sanitize_text_field($_POST[$key]);
    endforeach;

    $cart_item_data['custom_data']['unique_key'] = md5( microtime().rand() );
    WC()->session->set( 'custom_data', $cart_item_data['custom_data'] );
    return $cart_item_data;
}

// Display custom fields in cart items (cart and checkout pages)
add_filter( 'woocommerce_get_item_data', 'display_custom_fields_cart_item_data', 10, 2 );
function display_custom_fields_cart_item_data($item_data, $cart_item){
    if( ! array_key_exists( 'custom_data', $cart_item ) )
        return $item_data;

    $bags = bags_and_sheets_labels_keys();
    foreach($bags as $key => $value ):
        if( array_key_exists( $key, $cart_item['custom_data'] ) )
            $item_data[] = array(
                'key'   => $value,
                'value' => $cart_item['custom_data'][$key]
            );
    endforeach;
    return $item_data;
}

// Save and display custom fields in order item meta
add_action( 'woocommerce_add_order_item_meta', 'add_custom_fields_order_item_meta', 20, 3 );
function add_custom_fields_order_item_meta( $item_id, $cart_item, $cart_item_key ) {
    $bags = bags_and_sheets_labels_keys();
    foreach($bags as $key => $meta_key_label ):
        if( array_key_exists($key, $cart_item['custom_data']) )
            wc_update_order_item_meta( $item_id, $meta_key_label, $cart_item['custom_data'][$key] );
    endforeach;
}

// Add products SKUs and cutom fields as formated data in customer note
add_action('woocommerce_checkout_update_order_meta', 'after_checkout_create_order', 20, 2);
function after_checkout_create_order( $order_id, $data ) {
    $skus = $counts = $output = array();
    $bags  = bags_and_sheets_labels_keys();

    // Get the WC_Order Object (instance)
    $order = wc_get_order($order_id);

    // Loop through order items
    foreach( $order->get_items() as $item_id => $item ) {
        $product = $item->get_product();
        $skus[] = $product->get_sku(); // Set SKUs in an array
        // Add metakeys to the array (if they exist)
        foreach( $bags as $meta_key_label ){
            $item_meta = wc_get_order_item_meta( $item_id, $meta_key_label, true );
            if( ! empty($item_meta) ){
                $counts[$meta_key_label] += $item_meta;
                $count = true;
            }
        }
    }
    // Add Products SKUs
    $text = __('Products SKUs', 'woocommerce') . ': ' . implode(' - ', $skus ). ' | ';

    // Get each custom item meta data count (if they exist)
    if( isset($count)){
        foreach( $counts as $key_label => $value ){
            $output[] = $key_label . __(' count: ', 'woocommerce') . $value;
        }
        // Format all data as a text string
        $text .= implode(' - ', $output );
    }
    // Get customer note
    $note = $order->get_customer_note();
    // Merging existing customer note with bags count (if it exist)
    $note = empty( $note ) ? $text : $note . '<br/>' . $text;
    // Set the new customer note before saving
    $order->set_customer_note( $note );
    $order->save();
}

代码进入活动子主题（或活动主题）的 function.php 文件中。

经过测试并按预期工作。