please help how to validate user insert 12 character in field using atk

this is question about Achievo Atk Framework:

i need to validate a field.

if a fields is a must i just need to put AF_OBLIGATORY

fields must be been fill in 15 characters. if a user fill in less than that how to make a wa开发者_如何学Crning or message they have to fill in 15 characters.

You need to setup a validate function

See the forum - http://forum.achievo.org/viewforum.php?f=2

and other resources at - http://www.atk-framework.com/wiki/ATK

Wayne

NO,

but

when you are creating database we must select data type as varchar.

If you selected char type it occupy total size with null.

If you selected varchar type it will store how much string length at the dynamic time.