[How to auto populate custom field with current user role]

For anyone that may want to know, the following snippet did the job.  The only last thing I need to do is somehow make it show "Guest" if no role is found.  I think I need an if else statement or something.  Anyone have any ideas?

 

function onboarding_update_fields( $fields = array() ) {
   $user = wp_get_current_user();
   $roles = (array)$user->roles;
   $fields['billing']['customer_type']['default'] = $roles[0];
   return $fields;
}
add_filter( 'woocommerce_checkout_fields', 'onboarding_update_fields' );

[How to auto populate custom field with current user role]

Ok, I got it to pass data.  Because I am using the Checkout Field Editor plugin I assume this is the reason I had to do it this way.  Now I just need to figure out how to get the default to be the user role.   Belo w is what I had to do to get it to even pass data.

function custom_override_checkout_fields ( $fields ) {
    $fields['billing']['customer_type']['label'] = 'Customer Type';
        $fields['billing']['customer_type']['default'] = 'one';

    return $fields;
} // End custom_override_checkout_fields()

add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );
 

[How to auto populate custom field with current user role]

Nope, it passed no data.  

[How to auto populate custom field with current user role]

Oh, and I did try the customer name snippet that you suggested just to see if it would pass that info, but it does not either.

[How to auto populate custom field with current user role]

Unfortunately no, first name would not work for me.  I sell products to end users, and through distributors, all of which order through the website.  I use Shipstation plugin and I need to pass to shipstation whether it is a Customer, a Guest, or Distributor Tier1, Distributor Tier2, or Distributor Tier3 so that my automation in shipstation is correct.   I have a custom field in the checkout that I created with the plugin Checkout Field Editor and I have successfully created code that makes that field pass to shipstation, now I just need to figure out how to automatically populate that field with the current user role.  Just banging my head here, as it feels like I am so close.

[How to auto populate custom field with current user role]

Thank you, I was hopeful that would do it because I know you are right but still does not work.   Any other ideas?  Thank you so much for responding

[How to auto populate custom field with current user role]

I am trying to populate a custom field called "Customer Type" current user role.  The custom field is displayed on my checkout page.   I tried the below in my functions.php of my child theme and thought it would work but it does nothing.  Can anyone tell me what I might be doing wrong?  

$user = wp_get_current_user();
function onboarding_update_fields( $fields = array() ) {

       $fields['customertype'] = $user;

   return $fields;
}

add_filter( 'woocommerce_checkout_fields', 'onboarding_update_fields' );