Sort comments by votes

[davekonopka]

Add an option to sort comments on a selected post by number of votes.

[jmorais]

Old ticket, but +1

[jmorais]

I just figured out how to do it: in updownupdown.php we will need these two functions:

function up_down_comment_votes_only_total( $comment_id ) {
    global $up_down_plugin;
    if ( !$comment_id )
        return 0;   
    $vote_counts = $up_down_plugin->get_comment_votes_total( $comment_id );
    return $vote_counts["up"] -  $vote_counts["down"] ;
}

function comment_comparator($a, $b) {

    $cmp = 0;

    if ($a->comment_ID != $b->comment_ID) {
    $votes_a = up_down_comment_votes_only_total( $a->comment_ID );
    $votes_b = up_down_comment_votes_only_total( $b->comment_ID );
    if ($votes_a != $votes_b)
        $cmp = $votes_a > $votes_b?-1:1;
    else
        $cmp = strtotime($a->comment_date) < strtotime($b->comment_date)?-1:1;
    }

    return $cmp;

}

And then, on your comments.php, we need:

global $wp_query;
$comment_arr = $wp_query->comments; usort($comment_arr, 'comment_comparator');
wp_list_comments('callback=your_callback_name', $comment_arr);

Where your_callback_name is the function you use to render your comments.