At the first regular meeting of the city council in each year, the mayor, with the approval of the city council, shall appoint a city attorney, together with such assistant city attorneys as may be authorized, and shall provide for the payment of such attorney or attorneys for services rendered to the city. The city attorney shall be responsible for providing for the representation and defense of the city in all litigation in which the city is a party; may be the prosecuting officer in the municipal court; shall attend the meetings of the council as directed; shall advise the city council, mayor, and other officers and employees of the city concerning legal aspects of the city's affairs; and shall perform such other duties as may be required by virtue of the person's position as city attorney.