title: Symfony4 Equivalent to display the current route
body: <p>I'm looking to show the current route with symfony4. I try this: </p>
  
  <pre><code>{% set currentPath = app.request.attributes.get('_route') %}
  </code></pre>
  
  <p>but it does not work, the result is null</p>
  
  <p>Thank you.</p>