Question

I have an embarrassingly basic question:

I’m working on a plain-old-ruby model that deals with money, and some of the class methods return prices which need to be formatted for display.

In the past I’ve used include ActionView::Helpers::NumberHelper to stick the number_to_currency method in a model, but that only works for instance methods.

How do you get that method to be accessible from a class method?

Answer 1

Use extend:

class MyClass
  extend ActionView::Helpers::NumberHelper
end