title: How to call helper method from model?
body: <p>I use MongoDB as database in my Rails application with MongoID gem. I want to call helper method from model with n aafter_create callback method. How is it possible?<br>My model code is:<br></p>
  
  <pre><code>class Department
    include ApplicationHelper
    after_create :create_news
    private
    def create_news
      @user = ApplicationHelper.get_current_users
    end
  end
  </code></pre>
  
  <p>And my helper code is:<br></p>
  
  <pre><code>module ApplicationHelper
    def get_current_users
      current_user
    end
  end
  </code></pre>
  
  <p>When I create new department then following error occur.<br></p>
  
  <pre><code>undefined method `get_current_users' for ApplicationHelper:Module
  </code></pre>
  
  <p>How to remove error?<br> Thanks in advance.</p>