WordPress: Add user role class to body tag

wp-role-bodyclass.php

<?php

// Add role class to body
function add_role_to_body($classes) {   
    foreach (wp_get_current_user()->roles as $user_role) {
        $classes[] = 'role-'. $user_role;
    }
    return $classes;
});
add_filter('body_class','add_role_to_body');
add_filter('admin_body_class', 'add_role_to_body');

?>

where to add this code guys?

I found this didn't play well with the theme I'm using (if it were up to me I'd make my own themes but i'm not the boss unfortunately..), hope this helps any one in my position :)

function add_role_to_body($classes) {
    global $current_user;
    $user_role = $current_user->roles;
    return array_merge( $classes, array( $user_role[0] ) );
}
add_filter('body_class','add_role_to_body');

@joanna-s thank you!!

This works for serveral user roles per user....
`function add_role_to_body($classes) {

global $current_user;
foreach ($current_user->roles as $user_role)
	$classes[] = 'role-'. $user_role;

return $classes;

}
add_filter('body_class','add_role_to_body');
`

Here’s @santiazpi’s code with the syntax highlighting fixed, plus refactored to use a function expression as the callback:

add_filter("body_class", function($classes) {
    global $current_user;
    
    foreach ($current_user->roles as $user_role) {
        $classes[] = "role-{$user_role}";
    }

    return $classes;
});

FYI, here’s how to add role classes in the WP admin:

add_filter("admin_body_class", function($classes) {
  $user = wp_get_current_user();
  foreach ($user->roles as $user_role) {
    $classes .= " role-{$user_role}";
  }
  return $classes;
});

https://developer.wordpress.org/reference/hooks/admin_body_class/

Thanks @tedw I've updated the gist using your second function which seems to be compatible with the frontend theme as well.

Agreed, I used the first snippet posted by @tedw and it works perfectly on the frontend. Don't really need the role as body classes on my WP Admin.

Thank you @tedw it works great!

HELLO
I am beginner! Pltease help!

I need the snippet, which will hide the button ADD LISTING for couple roles

Please help I don't understand

I download and install "Code Snippets"

For test I take the code from the first messages of this discussion

http://joxi.ru/Y2Lw477tMb1Rvm

I need make 2 snippets for two different roles