add custom functions to model

[techo207]

sometimes is necessary add custom functions in model, for example a function "is Password" for check plain password with encrypted saved password

[4strid]

I've always handled this at a layer of abstraction one level above the database models themselves. Heck you can even attach them to the model itself, since it's just a plain object. Here's how I do it in one of my projects:

https://github.com/4strid/diet-vhost/blob/master/app_modules/ctrl-panel/lib/models/user.js