You can leave the function in the controller file but pre-pend __ to the name. This is the Python way to create private functions and it appears to be supported well in Web2Py.
An example would be: def __privateFunc(): On Oct 24, 5:18 am, Luther Goh Lu Feng <elf...@yahoo.com> wrote: > If I have a function that I intend to call from different controllers, but I > have no need for the function to have a view, where should this function be > defined? eg. a function that simply calculates the outcome of a math formula, > and several controllers will call this function to display the result. > > Should it be defined within a controller, or elsewhere?