I’m trying to set up notifications using Symfony UX Notify. I followed the documentation here: text and also used the documentation to set up the Mercure server: text

Here’s how I configured my .env file:

###> symfony/mercure-notifier ###
MERCURE_DSN=mercure://default
###< symfony/mercure-notifier ###

###> symfony/mercure-bundle ###
# See https://symfony.com/doc/current/mercure.html#configuration
# The URL of the Mercure hub, used by the app to publish updates (can be a local URL)
MERCURE_URL=http://localhost:62635/.well-known/mercure
# The public URL of the Mercure hub, used by the browser to connect
MERCURE_PUBLIC_URL=http://localhost:62635/.well-known/mercure
# The secret used to sign the JWTs
MERCURE_JWT_SECRET= my jwt token here 
###< symfony/mercure-bundle ###

And here’s how my notifier.yaml file looks like:

framework:
    notifier:
        chatter_transports:
            myMercureChatter: '%env(MERCURE_DSN)%'

To create notifications, I didn’t use a Command but did it in the controller:

use SymfonyComponentNotifierBridgeMercureMercureOptions;
use SymfonyComponentNotifierExceptionTransportExceptionInterface;
use SymfonyComponentNotifierMessageChatMessage;
use SymfonyComponentNotifierChatterInterface;

class PageIndexController extends DefaultLayoutController
{
    public function __construct(
        ThemeHelper                             $theme,
        private readonly EntityManagerInterface $entityManager,
        private readonly IndexLinkRepository    $indexLinkRepository,
        private ChatterInterface                $chatter
    )
    {
        parent::__construct($theme);
    }

    // Other controller code

    // Method where I create the notification
    #[Route('/new', name: 'app_page_index_new', methods: ['GET', 'POST'])]
    public function new(Request $request, ParameterBagInterface $parameterBag): Response
    {
        /** @var User $user */
        $user = $this->getUser();

        $dto = new IndexLinksDTO();

        $form = $this->createForm(IndexLinksType::class, $dto, [
            'validation_groups' => ['basic']
        ]);

        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $dto->setUser($user);

            $cost = $parameterBag->get('page_index_cost');
            $totalCost = count($dto->getLinks()) * $cost;

            if ($user->getBalance() < $totalCost) {
                $this->addFlash('error', "You do not have enough tokens to index these links.
                                                        Indexing one link costs $cost tokens. Please top up your balance for quality
                                                        link indexing.");
                return $this->redirectToRoute('app_page_index_new');
            }

            $entityManager = $this->entityManager;
            foreach ($dto->getLinks() as $link) {
                $indexLink = new IndexLink();
                $indexLink->setUser($user);
                $indexLink->setUrl($link->getUrl());
                $indexLink->setUserTokens($cost);
                $entityManager->persist($indexLink);
            }

            $user->setBalance($user->getBalance() - $totalCost);

            $entityManager->flush();

            $message = (new ChatMessage(
                'Success!!! Links added successfully for indexing.',
                new MercureOptions(['/index/link-indexing'])
            ))->transport('myMercureChatter');

            $this->chatter->send($message);


            return $this->redirectToRoute('app_page_index');
        }

        return $this->render('pages/page_index/create.html.twig', [
            'form' => $form->createView(),
        ]);
    }
}

After that, I add this line to the TWIG template:

{{ stream_notifications(['/index/link-indexing']) }}

But when I add a link and it’s successful, the notification doesn’t come through. Can you please advise on what I’m doing wrong or what I’m missing? Thank you!