public function get_options($query)
    {
        $data = array();

        $this->db->select(array('cities.insee_code', 'cities.name', 'cities.department_code'))
            ->from($this->table)
            ->like('cities.name', $query)
            ->order_by('name', 'asc')
            ->limit(100, 0);

        foreach ($this->db->get()->result() as $row) {
            $data[] = [
                'id' => $row->insee_code,
                'text' => $row->name.' ('.$row->department_code.')'
            ];
        }

        return $data;
    }