app\models\BeatmapDiscussion::votesSummary PHP Method

    public function votesSummary()
    {
        $votes = ['up' => 0, 'down' => 0];
        foreach ($this->beatmapDiscussionVotes as $vote) {
            if ($vote->score === 1) {
                $votes['up'] += 1;
            } elseif ($vote->score === -1) {
                $votes['down'] += 1;
            }
        }
        return $votes;
    }