title: Do you have to manually include ApplicationHelper in ApplicationController in Rails 6?
body: <p>Controller:</p>
  
  <pre><code>class FooController &lt; ApplicationController
    def index
      bar_method
  </code></pre>
  
  <p>ApplicationHelper:</p>
  
  <pre><code>module ApplicationHelper
    def bar_method
  </code></pre>
  
  <p>Viewing the index page raises <code>undefined method bar_method</code>.</p>
  
  <p>Does <code>ApplicationHelper</code> need to be manually included?</p>
  
  <p>Rails 6.</p>