Woocommerce different headers for each email types

Question

I use Woocommerce and I need to change email header according to its type, so that "customer-new-account.php", "customer-processing-order.php", "admin-new-order.php" (and so on)... they must have different header.

I've just copied woocommerce "emails" folder inside my child template and now I need to know how to make code changes.

Any help is appreciate. ;-) Thanks in advance.

Answer 1

I believe the cleanest approach is unbind the default email header action and make your custom one. If you check any of the email templates, eg. /woocommerce/templates/emails/admin-new-order.php , you will see at the top that they already pass the email object as a second parameter to the action, just the default WC hooks don't use it:

 <?php do_action( 'woocommerce_email_header', $email_heading, $email ); ?>

So in your functions.php you can do this:

// replace default WC header action with a custom one
add_action( 'init', 'ml_replace_email_header_hook' );    
function ml_replace_email_header_hook(){
    remove_action( 'woocommerce_email_header', array( WC()->mailer(), 'email_header' ) );
    add_action( 'woocommerce_email_header', 'ml_woocommerce_email_header', 10, 2 );
}

// new function that will switch template based on email type
function ml_woocommerce_email_header( $email_heading, $email ) {
    // var_dump($email); die; // see what variables you have, $email->id contains type
    switch($email->id) {
        case 'new_order':
            $template = 'emails/email-header-new-order.php';
            break;
        default:
            $template = 'emails/email-header.php';
    }
    wc_get_template( $template, array( 'email_heading' => $email_heading ) );
}

If you don't need to switch whole file and just want a small change in existing header, you can pass the email type parameter into the template, just replace the bottom template inclusion by:

wc_get_template( $template, array( 'email_heading' => $email_heading, 'email_id' => $email->id ) );

and then in your header template use it as $email_id, eg:

<?php if($email_id == 'new_order'): ?>
    <h2>Your custom subheader to appear on New Order notifications only</h2>
<?php endif ?>