Validation callback function inside model

[eluser]gtech[/eluser]
Not sure I agree with moving the validation to the model.. I use the models for processing data for database manipulation, managing rollbacks, error logging etc. I would suggest that the controller should be dealing with user interface interactions (parsing url information, building variables to pass to a view, form validation etc)

extract from documentation:

-----------------------
What is a Model?

Models are PHP classes that are designed to work with information in your database.
-----------------------

if your function is getting messy you can extract code to libraries (for reuse) OR create an _ function in the controller ( _ means you cannot load it from the browser)

e.g.

Code:

..
/****
*/
fucntion external() {
  $data=$this->_internal();
  echo $data;
}
/****
*/
fucntion _internal() {
  return "I like to teach the world to sing";
}