php function to display commenter username or login

Question

I want to display the commenters username or login name in a comment template. I know there is a function comment_author_link(), but this displays the "display name publicly as" name and not necessarily the username. Usernames have to be unique so I would prefer to display the username. I have tried some other functions and have been looking all over for this. The closest I got was the following function:

<?php
if ($comment->user_id) {
    $user=get_userdata($comment->user_id);
    echo $user->user_login;
}
else {
    comment_author_link();
}
?>

But for some reason this only displayed the name for the first commenter and then it does not display a name.

How do I display the commenters username or login name?

Thank you.

Answer 1

If the person commenting is already logged in you could capture the user object like so $user = wp_get_current_user(); and then simply grab the username like $user->user_login. Once you have this it shouldn't be too hard to add in to the creation of a comment so its only asking for the username alone and only once logged in.