An action hook where a comment meta is updated

Question

By analogy to the hook on post meta update, I use the following code for hooking when comment meta value is updated.

My comment meta key is "consider" and can have 2 values: 0 and 1.

My Goal is to count number of comments with consider=1, and when this count reaches 10, perform some operations.

            add_action( 'update_comment_meta', 'ten_considered_comments_badge');

            function ten_considered_comments_badge($meta_id, $comment_id, $key, $value)
                {
                    if ( 'consider' != $key or 1!= $value)  return;

                    $com=get_comment($comment_id);
                    if ( !$com  )  return;

               $args = array(
  'type' => '',
  'user_id' => $com->user_id,
  'meta_key' => 'consider',
  'meta_value' => '1',
);
$com2= get_comments($args);
             $count = count($com2);

                     if( $count%10==0) {

     $number_of_bronze_badges= get_user_meta($com->user_id,'user_number_of_bronze_badges',true);
        $number_of_bronze_badges= $number_of_bronze_badges + 1;

        update_user_meta($com->user_id, 'user_number_of_bronze_badges', $number_of_bronze_badges);
        }
        }

What I am missing in this code . Your help is highly appreciated.

Answer 1

I think you only want get_comment and not get_comments on this line:

$com=get_comments($comment_id);

You are only checking for a single comment, by the ID. get_comments won't do that the way you are using it.

There is a check halfway through the update_metadata function that compares the existing value to new value under some circumstances. That runs before the update_comment_meta hook and sometimes returns so that that hook never runs. Admittedly this is a guess, but if you are passing the same value, such as true every time this may be where it hangs.

The update_{$meta_type}_metadata hook would fire, but is a filter and not really the best choice for this kind of hook. I am wondering if you shouldn't be using the edit_comment hook instead.