Ohio Rev. Code § 705.11
The village solicitor or city director of law shall act as the legal advisor to and attorney for the municipal corporation, and for all officers of the municipal corporation in matters relating to their official duties. He shall prepare all contracts, bonds, and other instruments in writing in which the municipal corporation is concerned, and shall indorse on each his approval of the form and the correctness thereof. No contract with the municipal corporation shall take effect until the approval of the village solicitor or city director of law is indorsed thereon. He or his assistants shall be the prosecutor in any police or municipal court, and shall perform such other duties and have such assistants and clerks as are required or provided.
R.C. §705.11