How do I use an ActionView::Helper in a Ruby script, outside of Rails?

Question

I am looking to use ActionView::Helpers::NumberHelper from a Ruby script. What all do I need to require etc.?

Answer 1

As of Rails 3.2.13, you can do the following:

class MyClass
  include ActionView::Helpers::NumberHelper

  def my_method
    ...
    number_with_precision(number, precision: 2)
    ...
  end
end

You might need to require 'action_view' too.

Edit: This answer is still valid in Rails 4.2.3.