Csdrhrt

I'm trying to do a redirect on my node.html.twig template based on the content type because I'm using views for my content.

I tried this:

{% do redirect('/example') %}

or this:

{% redirect '/example' %}

but nothing works. Any idea?

Don't do it in the Twig file. This is not where that logic belongs. It should be in an Event.

See this similar question: EventSubscriber called on specific node type or path

All that is left is checking the node type and sending a RedirectResponse.

Gabe Sullice has a Gist that sounds very close to what you are trying to accomplish: https://gist.github.com/gabesullice/96bdae1518d11bb4565e72c33ffcae4c

So your code would fill in something like:

  /**

   * Determines whether we should send a RedirectResponse for this node.

   */

  protected function redirectApplies(NodeInterface $node) : bool {

    $redirect_types = ['type_1', 'type_2', 'type_3'];

    return in_array($node->getType(), $redirect_types);

  }

But if you go to different urls for different types, you will need to adjust it a little more.

Where did you see the redirect functionality? I dont think it's part of standard twig or anything drupal provides: https://www.drupal.org/docs/8/theming/twig/functions-in-twig-templates

You'd be better of doing the redirect in a proprocess function maybe. This might help
Redirect basic page to external url when visiting page

As @Kevin suggested
i created a custom module based on Gabe Sullice code:
https://gist.github.com/gabesullice/96bdae1518d11bb4565e72c33ffcae4c

My final code redirect to custom url by content type:

    namespace Drupalredirect_node_moduleEventSubscriber;

use SymfonyComponentEventDispatcherEventSubscriberInterface;

use SymfonyComponentEventDispatcherEvent;

use DrupalCoreRoutingCurrentRouteMatch;

use DrupalnodeNodeInterface;

use DrupalCoreCacheCacheableRedirectResponse;

use SymfonyComponentHttpFoundationRedirectResponse;

/**

 * Class ResponseSubscriber.

 *

 * @package Drupalredirect_node_module

 */

class ResponseSubscriber implements EventSubscriberInterface {

  /**

   * DrupalCoreRoutingCurrentRouteMatch definition.

   *

   * @var DrupalCoreRoutingCurrentRouteMatch

   */

  protected $routeMatch;

  /**

   * Constructor.

   */

  public function __construct(CurrentRouteMatch $current_route_match) {

    $this->routeMatch = $current_route_match;

  }

  /**

   * {@inheritdoc}

   */

  static function getSubscribedEvents() {

    $events['kernel.response'] = ['handle'];

    return $events;

  }

  /**

   * This method is called whenever the kernel.response event is

   * dispatched.

   *

   * @param GetResponseEvent $event

   */

  public function handle(Event $event) {

    $route_name = $this->routeMatch->getRouteName();

    switch ($route_name) {

      case 'entity.node.canonical':

        $node = $this->routeMatch->getParameter('node');

        if ($this->redirectApplies($node)) {

          $event->setResponse(new RedirectResponse($this->getRedirect($node)));

        }

    }

  }

  /**

   * Determines whether we should send a RedirectResponse for this node.

   */

   protected function redirectApplies(NodeInterface $node) {

    // One should have logic here returning TRUE or FALSE for whether we should redirect this response.

    $redirect_on = ['programas', 'servicios', 'aliados', 'testimonios', 'nosotros', 'nuestro_equipo', 'datos_de_contacto', 'banner', 'seccion'];

    return (in_array($node->getType(), $redirect_on));



  }

  protected function getRedirect(NodeInterface $node) {

    // We can cache this response when this is fixed: https://www.drupal.org/node/2573807

    // $response = CacheableRedirectResponse::create($url);

    // $response->addCacheableDependency($node);

    // return $response;



    switch ($node->getType()) {

      case 'nuestro_equipo':

        $url = "/profesionales";

        break;



      case 'datos_de_contacto':

        $url = "/contacto";

        break;



      case 'nosotros':

        $url = "/nosotros";

        break; 



      case 'banner':

        $url = "/";

        break;  



      case 'testimonios':

        $url = "/testimonios";

        break;



      case 'aliados':

        $url = "/aliados";

        break;



      default:

        $search_chars = array('á','é','í','ó','ú','ñ','Á','É','Í','Ó','Ú','Ñ',' ');

        $replace_chars= array('a','e','i','o','u','n','a','e','i','o','u','n','-');

        $node_title = str_replace($search_chars, $replace_chars, strtolower( $node->getTitle() ));

        $url = "/".$node->getType()."/".$node_title;

        break;

    }

    return $url;

  }

}