获取外部文件中的 wooCommerce 字段值

Question

每当客户下订单时，他们都会收到一封电子邮件。此电子邮件在位于以下位置的文件中生成：/woocommerce/emails/customer-processing-order.php

我想自定义此电子邮件并从客户填写的字段中获取字段值。例如，我想添加类似以下内容：亲爱的[名字]。名字是一个变量。我该如何实现这一点？

当前电子邮件模板如下所示：

<?php
/**
* Customer processing order email
*
* This template can be overridden by copying it to yourtheme/woocommerce/emails/customer-processing-order.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* @see         https://docs.woocommerce.com/document/template-structure/
* @author      WooThemes
* @package     WooCommerce/Templates/Emails
* @version     2.5.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* @hooked WC_Emails::email_header() Output the email header
*/

do_action( 'woocommerce_email_header', $email_heading, $email ); ?>
<p><?php _e( "Your order has been received and is now being processed. Your order details are shown below for your reference:", 'woocommerce' ); ?></p>
<?php
/**
* @hooked WC_Emails::order_details() Shows the order details table.
* @hooked WC_Structured_Data::generate_order_data() Generates structured data.
* @hooked WC_Structured_Data::output_structured_data() Outputs structured data.
* @since 2.5.0
*/
do_action( 'woocommerce_email_order_details', $order, $sent_to_admin, $plain_text, $email );
/**
* @hooked WC_Emails::order_meta() Shows order meta data.
*/
do_action( 'woocommerce_email_order_meta', $order, $sent_to_admin, $plain_text, $email );
/**
* @hooked WC_Emails::customer_details() Shows customer details
* @hooked WC_Emails::email_address() Shows email address
*/
do_action( 'woocommerce_email_customer_details', $order, $sent_to_admin, $plain_text, $email );
/**
* @hooked WC_Emails::email_footer() Output the email footer
*/
do_action( 'woocommerce_email_footer', $email );

Answer 1

我原以为我需要添加某种过滤器或钩子才能获得客户填写的值。显然情况并非如此。我可以在不修改模板的情况下获取如下值：

$_POST['fieldname'];