Ala. Code § 24-1-133

The exercise by any city, county, municipal corporation, district, or other subdivision or public body or agency of the state of the powers granted in this article may be authorized by resolution of its governing body adopted by a majority of the members of such governing body present at a meeting of such governing body, which resolution may be adopted at the meeting at which such resolution is introduced. Such a resolution or resolutions shall take effect immediately and need not be laid over or published or posted.