elitaz

Back to my question, if someone looking to allow only one comment per user per post I think I found a solution:

add_filter('comments_open', 'restrict_users', 10, 2);

function restrict_users($open, $post_id) {
   if (intval($post_id) && get_post($post_id)) {
       $args = array('post_id' => $post_id, 'count' => true);
       $user = wp_get_current_user();
       if ($user && intval($user->ID)) { // for registered users
           $skip = false;
           $ignoreTheseRoles = array('administrator', 'editor'); // which user roles should be ignored
           if ($user->roles && is_array($user->roles)) {
               foreach ($user->roles as $role) {
                   if (in_array($role, $ignoreTheseRoles)) {
                       $skip = true;
                       break;
                   }
               }
           }
           if (!$skip) {
               $args['user_id'] = $user->ID;
               $open = get_comments($args) ? false : true;
           }
       } else { // for guests
           $commenter = wp_get_current_commenter();
           if ($commenter && is_array($commenter) && isset($commenter['comment_author_email'])) {
               $args['author_email'] = $commenter['comment_author_email'];
               $open = get_comments($args) ? false : true;
           }
       }
   }
   return $open;
}

Now just need the way to let author to reply the comments…

I was able to disable post author to post comment, but now he is not able to write reply any more as well….

global $current_user;
$args = array('user_id' => $current_user->ID);
if ( get_current_user_id() == $post->post_author ){
    echo 'disabled';
} else {
   comment_form(
		array(
			'logged_in_as'       => null,
			'title_reply'        => esc_html__( 'Leave a comment', 'twentytwentyone' ),
			'title_reply_before' => '<h2 id="reply-title" class="comment-reply-title">',
			'title_reply_after'  => '</h2>',
		)
	);
}

Hi Ian. Thanks for reply. It works like a charm.
Cheers mate!

Hi @ninjew,
Yes.

Hi. Thanks for the reply. One more question, is it possible to show one member posts on the map without search? Like sort posts by user id? Thanks

And one more thing, is it any way to add post location via front end? For example while using Wp User frontend plugin. Thanks