Issue with the ParamConverter annotation - annotations

Question

I am working on a mailbox between two users for my application. I made the controller, the form and the view, everything is working except when I add the entity Ad in the MessageController to return informations about the ad, for the view.
The error message is :
App\Entity\Ad object not found by the #ParamConverter annotation.
I did exactly the same thing when I managed the booking of an ad, it all worked perfectly fine, I really don't get what's wrong with the rest.
For example, my BookingController which is working :
/**
* #Route("/ads/{id}/booking", name="ad_booking")
* #IsGranted("ROLE_USER")
*
* #return Response
*/
public function booking(Ad $ad, Request $request, ObjectManager $manager)
{
$booking = new Booking;
$form = $this->createForm(BookingType::class, $booking);
$form->handleRequest($request);
if($form->isSubmitted() && $form->isValid())
{
$user = $this->getUser();
$booking->setBooker($user)
->setAd($ad)
;
if(!$booking->isAvailableDate())
{
$this->addFlash(
'warning',
'Attention, les dates que vous avez choisies ne sont pas disponibles, elles ont déjà été réservées.'
);
}
else
{
$manager->persist($booking);
$manager->flush();
$this->addFlash(
'success',
"Votre réservation a bien été effectuée !"
);
return $this->redirectToRoute('booking_show', [
'id' => $booking->getId(),
'withAlert' => true
]);
}
}
return $this->render('booking/booking.html.twig', [
'ad' => $ad,
'bookingForm' => $form->createView()
]);
}
My MessageController that doesn't work :
namespace App\Controller;
use App\Entity\Ad;
use App\Entity\Message;
use App\Form\MessageType;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\Request;
use Doctrine\Common\Persistence\ObjectManager;
use Symfony\Component\Routing\Annotation\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
class MessageController extends AbstractController
{
/**
* #Route("/ads/{id}/message", name="message_provider")
* #IsGranted("ROLE_USER")
*
* #return Response
*/
public function message(Ad $ad, Request $request, ObjectManager $manager)
{
$message = New Message();
$form = $this->createForm(MessageType::class, $message);
$form->handleRequest($request);
if($form->isSubmitted() && $form->isValid()) {
$ad = $this->getAd();
$user = $this->getUser();
$message->setSender($user)
->setAd($ad)
;
$manager->persist($message);
$manager->flush();
$this->addFlash(
'success',
"Votre message n°{$message->getId()} a bien été envoyé."
);
return $this->redirectToRoute('message_show', [
'id' => $message->getId()
]);
}
return $this->render('message/new.html.twig', [
'form' => $form->createView()
]);
}
/**
* #Route("/message/{id}", name="message_show")
*
* #return Response
*/
public function showmessage(Message $message)
{
return $this->render('message/show.html.twig', [
'message' => $message,
]);
}
}
and my Message entity
namespace App\Entity;
use DateTime;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass="App\Repository\MessageRepository")
*/
class Message
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="text")
*/
private $content;
/**
* #ORM\ManyToOne(targetEntity="App\Entity\User", inversedBy="messages")
* #ORM\JoinColumn(nullable=false)
*/
private $receiver;
/**
* #ORM\ManyToOne(targetEntity="App\Entity\User", inversedBy="sentMessages")
* #ORM\JoinColumn(nullable=false)
*/
private $sender;
/**
* #ORM\ManyToOne(targetEntity="App\Entity\Ad", inversedBy="messages")
* #ORM\JoinColumn(nullable=false)
*/
private $ad;
/**
* #ORM\Column(type="datetime")
*/
private $createdAt;
I still got the App\Entity\Ad object not found by the #ParamConverter annotation. error message, even when I tried to define the #ParamConverter in the annotation. I can't see what's wrong.

Answer 1

Not sure if it's related but it seems to me, you never use the object $ad created from {id} in your function message. I think you use the id of your Ad or an object Ad on the form $this->getAd() and you never use the one on the route {id}. Maybe it messed up, try to clarify what is $ad on this function (from the route {id} or from the form).
If I had to bet, I would say you don't need this line:$ad = $this->getAd(); because you don't identify you current used $ad on the form but on the route.
(It should be a comment but I can't comment yet)