private function getQueryFilter($filters)
    {
        $where = '';
        if (!empty($filters))
        {
            foreach ($filters as $filterKey => $filterValue)
            {
                $where .= ' AND m.' . $filterKey . ' LIKE :' . $filterKey;
            }
            $where = ' WHERE ' . substr($where, 4);
        }
        return $where;
    }