how to define ID as char(22)

Hi guys,     I am newer of ROR. I want to use UUID in my project but I don't know where and how to define ID as char(22).     Any one can help me?     Thanks a lot!

Daniel Chen wrote:

Hi guys,     I am newer of ROR. I want to use UUID in my project but I don't know where and how to define ID as char(22).     Any one can help me?     Thanks a lot!

Refer http://rorexperts.com/viewtopic.php?t=110&highlight=