Ala. Code § 22-50-18

Nothing contained in this chapter shall change or alter the methods, means or procedures provided by law before the enactment of this chapter for the commitment or release of any person alleged to be non compos mentis, incompetent, mentally ill or emotionally disturbed. No person shall be committed to any institution established pursuant to the provisions of this chapter without his consent or except by due process of law in a court of competent jurisdiction.