about select model

[libaoming]

hello!
  i'am using tapesty5.2.0,when render select options must be enum or string 
list?some times options stored in database,so i must use internal APIs.
"If you ever find yourself forced to make use of internal APIs, please bring it 
up on the developer mailing list; this is how we know which services should be 
exposed as public, and fall under the backwards compatibility umbrella."
is any way to solve this problem?
                                                                                
                                                             thank you!