instance, implement a method <code>def enforce_authentication</code> in your <code>ApplicationController</code>. In the method, make sure the user has a session and redirect to the login page if they don’t. <br> The action must be accessible by <span class='object_link'><a href="ComponyController.html" title="ComponyController (class)">ComponyController</a></span> and the easiest way to achieve this is to implement the action in your <code>ApplicationController</code>. If this is never called, authenticat