Rails: Model instance method or helper method?

Question

By convention, should the following be defined as an instance method of my model or a helper method?

# app/models/user.rb
class User < ActiveRecord::Base
         


        

Answer 1

Go with the first (keep in model), also because you might want to do other stuff, like combined indexes :)

Answer 2

Everything directly related to your model should stay in your model.

This way, you keep coherent logic and tests.