WooCommerce中何时触发新订单邮件？ 尝试在发送前添加新值

Question

I have a plugin for official payment (Transbank of Chile) in WooCommerce but this plugin print the transaction_id directly in a "thankyou" page. I did to get this transaction and add to the database.

The problem is when WooCommerce send the "new Order" mail the transaction_id is never shown. I think that mail already sent before I get the transaction_id number. I want to know, when WooCommerce send the new order mail?

Answer 1

You can use woocommerce_email_after_order_table hook to add custom data into Email.

/**
 * 
 * @param instance $order
 * @param bool $sent_to_admin TRUE for admin
 */
function wh_addTransactionIdOrderEmail($order, $sent_to_admin)
{
    $order_id = method_exists($order, 'get_id') ? $order->get_id() : $order->id;
    $transaction_id = get_post_meta($order_id, "_transaction_id ", true); //<-- replace it with your metakey
    if(empty($transaction_id)) //if blank i.e for Failed/Cancelled order then do not add transaction ID
        return;
    echo '<p></p><p><strong>Transaction ID:</strong> ' . $transaction_id . '</p>';
}

add_action('woocommerce_email_after_order_table', 'wh_addTransactionIdOrderEmail', 10, 2);

Code goes in functions.php file of your active child theme (or theme). Or also in any plugin php files.
Code is tested and works.

Hope this helps!