Login script: validating with own callback in library.

[eluser]Aken[/eluser]
I can't explain exactly why this doesn't work, but I'm not surprised. CI is designed to look for callback functions inside the controller that the form_validation library is being used in. This is pretty much the same structure as a controller, though (which is why I can't explain exactly why it doesn't work). It may have to do with the underscore private function method also.

Personally it's really weird to use the form_validation tool inside your library, anyway. I would keep your Auth library code limited to things directly related to the Auth, and let your login() controller do the validation dirty work.