Please Help !! how to using not auto_increment id ?????

[eluser]Unknown[/eluser]
I am new to code igniter, and start my own project. I usually using mysql function UUID() to get unique character id.

How to do it with code igniter ? Active record only allows id using auto increment value is'nt it? Is there any trick ? Could anyone told me the trick ?

Thanks a lot before

regards

Dawning