在 WooCommerce 中为电子邮件主题添加自定义占位符 [英] Add a custom placeholder to email subject in WooCommerce

问题描述

我有一家 Woocommerce 商店，我想在接受付款后添加 delivery_date.

I have a Woocommerce shop and I wanted to add a delivery_date after I accept the payment.

我在名为 delivery_date 的订单部分创建了一个带有日期值的自定义字段.

I create a custom field in the order section named delivery_date with a date value.

现在我想将此自定义字段用作电子邮件通知主题中的占位符，例如:

Now I wanted to use this custom field as a placeholder in email notification subject, like:

您的订单现在是 {order_status}.订单详情如下供您参考:deliverydate: {delivery_date}

Your order is now {order_status}. Order details are shown below for your reference: deliverydate: {delivery_date}

我认为占位符不能像这样工作，我需要在 php 中更改一些内容，但我不知道在哪里.

I think the placeholder don't work like this, I need to change something in the php but I don't know where.

推荐答案

要在 woocommerce 电子邮件主题中添加自定义活动占位符 {delivery_date}，您将使用以下挂钩函数.

To add a custom active placeholder {delivery_date} in woocommerce email subject, you will use the following hooked function.

您之前会检查，delivery_date 是用于将结帐字段值保存到订单的正确后元键(在 wp_postmeta 数据库表中检查订单post_id).

You will check before, that delivery_date is the correct post meta key used to save the checkout field value to the order (check in wp_postmeta database table for the order post_id).

代码:

add_filter( 'woocommerce_email_format_string' , 'add_custom_email_format_string', 10, 2 );
function add_custom_email_format_string( $string, $email ) {
    $meta_key    = 'delivery_date'; // The post meta key used to save the value in the order
    $placeholder = '{delivery_date}'; // The corresponding placeholder to be used
    $order = $email->object; // Get the instance of the WC_Order Object
    $value = $order->get_meta($meta_key) ? $order->get_meta($meta_key) : ''; // Get the value

    // Return the clean replacement value string for "{delivery_date}" placeholder
    return str_replace( $placeholder, $value, $string );
}

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

Code goes in function.php file of your active child theme (or active theme). It should works.

然后在 Woocommerce > 设置 > 电子邮件 > 新订单"通知中，您将能够使用动态占位符 {delivery_date}...

Then in Woocommerce > Settings > Emails > "New Order" notification, you will be able to use the dynamic placeholder {delivery_date}…

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