AffiliateWP + WooCommerce - Need Method of Pulling Nickname from ID - php

Question

So, this one has my head in for a loop. I've contacted the Support of the plugin and they basically told me I'm SOL, but I refuse to believe there isn't a way to do this.
I'm using AffiliateWP to attribute sales to a single location. Each Affiliate feeds off of a Wordpress User, and for their nickname I've used their address/location.
Unfortunately, the plugin doesn't include this in the Order Details screen or Order Emails, which is a BIG problem. I've frankensteined some code together but keep getting all kinds of undefined errors because they do everything inside classes, which I guess makes sure that people like me can't fiddle in there?
Function for assigning an affiliate to an order: https://github.com/AffiliateWP/AffiliateWP/blob/master/includes/integrations/class-woocommerce.php#L78
Function for retrieving the Affiliates User ID: https://github.com/AffiliateWP/AffiliateWP/blob/master/includes/affiliate-functions.php#L204
Function for retrieving the Affiliates Name: https://github.com/AffiliateWP/AffiliateWP/blob/master/includes/affiliate-functions.php#L132
[Edit] And finally, my Frankenstein:
add_action( 'woocommerce_admin_order_data_after_billing_address', 'my_custom_checkout_field_display_admin_order_meta', 10, 1 );
function my_custom_checkout_field_display_admin_order_meta($order){
global $Affiliate_WP_WooCommerce;
echo '<p><strong>'.__('My Field').':</strong> ' . affiliate_wp()->affiliates->get_affiliate_name( $affiliate_id ) . '</p>';
}
This doesn't throw me an error, but it does throw me a blank area...

Answer 1

Try this:
add_action( 'woocommerce_admin_order_data_after_billing_address', 'my_custom_checkout_field_display_admin_order_meta', 10, 1 );
function my_custom_checkout_field_display_admin_order_meta($order){
global $Affiliate_WP_WooCommerce;
$order_id = $order->get_id();
$referrals = affiliate_wp()->referrals->get_by( 'reference', $order_id);
$affiliate_id = $referrals->affiliate_id;
echo '<p><strong>'.__('My Field').':</strong> ' . affiliate_wp()->affiliates->get_affiliate_name( $affiliate_id ) . '</p>';
}

Answer 2

the affwp_get_affiliate_name method returns blank on three conditions:
if ( ! $affiliate = affwp_get_affiliate( $affiliate ) ) {
return '';
}
if ( ! $user_info = get_userdata( $affiliate->user_id ) ) {
return '';
}
...
// If neither are set, return an empty string.
if ( empty( $first_name ) && empty( $last_name ) ) {
return '';
}
Start by manually passing an affiliate id you know to be associated with a record that contains a $first_name and/or $last_name, for example:
echo '<p><strong>'.__('My Field').':</strong> ' . affiliate_wp()->affiliates->get_affiliate_name(5) . '</p>';
This will rule out if the problem is with the $affiliate_id that you're currently passing it. If you get values returned, it should be a simple matter to fix.
After trying that I would experiment with changing the priority of the add_action(), raising it to 999 or something because it could possibly be executing before the relevant hooks in the plugin.