Common method in model and helper

I have a common method that exists in my model because it is called by my model. Retrospectively, my view also requires this model method. In order to accomplish this, I have:

1. moved the model method to the application_helper.rb file
2. my model calls the application_helper method by adding include ApplicationHelper at the top of my ActiveRecord model

Functionality wise, it works. But is this good practice?

My Model looks like this:

class Client < ActiveRecord::Base
  include ApplicationHelper
end