public function links($class = null)
    {
        if (is_null($class)) {
            $class = '';
        }

        $dateArray = explode('-', $this->date);
        $previousMonth = Carbon::create($dateArray[0], $dateArray[1], $dateArray[2])->subMonth()->toDateString();
        $nextMonth = Carbon::create($dateArray[0], $dateArray[1], $dateArray[2])->addMonth()->toDateString();

        $links = '<div class="row calendar-links"><div class="col-12">';
        $links .= '<a class="previous '.$class.'" href="'.url('events/'.$previousMonth).'">Previous Month</a>';
        $links .= '<a class="next '.$class.'" href="'.url('events/'.$nextMonth).'">Next Month</a>';
        $links .= '</div></div>';

        return $links;
    }