New answers tagged redirection
3
If you want to run code before the Drupal kernel is started use a middleware.
Use the drush code generator drush gen middleware and put your code in handle() of the generated middleware class:
MymoduleMiddleware.php
<?php
namespace Drupal\mymodule;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Symfony\Component\HttpFoundation\Request;
...
2
In general, never send responses from custom code. See How do I set a cookie using $response->headers->setCookie() in a form submission handler?
In this case you are sending a redirect response to the client while Drupal builds the real response containing the cookie to the session where the message gets stored. The real response never reaches the ...
3
The code depends on host name and IP address. So you could add the cache contexts url.site and ip:
$response = new TrustedRedirectResponse('https://site.ch/');
$response->getCacheableMetadata()->addCacheContexts(['ip', 'url.site']);
$event->setResponse($response);
In this case, though, caching doesn't make much sense because it doesn't save many ...
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