App\Entity\Site object not found by the #ParamConverter annotation - symfony

Question

I'm trying to create a new tempate in my project in symfony to put a climbing converter. But it doesn't work. I have the error:
App\Entity\Site object not found by the #ParamConverter annotation
I put the function in the entity "site" as following :
/**
* #Route("/site")
*/
class SiteController extends AbstractController
{
public function upload( KernelInterface $kernel): Response
{
$imagesDir = $kernel->getProjectDir().'/public/uploads'; // équivalent à $this->getParameter('images_directory')
dump($imagesDir) ;
return $this->render('site/show.html.twig');
}
/**
* #Route("/", name="site_index", methods={"GET"})
*/
public function index(SiteRepository $siteRepository): Response
{
return $this->render('site/index.html.twig', [
'sites' => $siteRepository->findAll(),
]);
}
/**
* #Route("/new", name="site_new", methods={"GET","POST"})
*/
public function new(Request $request): Response
{
$site = new Site();
$form = $this->createForm(SiteType::class, $site);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
//on recupère les medias transmises
$media = $form->get('site')->getData();
//on boucle sur les medias
foreach($media as $medi){
//on génère un nouveau nom de fichier
$fichier = md5(uniqid()) . '.' . $medi->guessExtension();
//on copie le fichier dans le dossier img
$medi->move(
$this->getParameter('images_directory'),
$fichier
);
//on stocke l'image dans la bdd
$img = new Media();
$img->setNom($fichier);
$site->addMedium($img);
}
$entityManager = $this->getDoctrine()->getManager();
$entityManager->persist($site);
$entityManager->flush();
return $this->redirectToRoute('site_index');
}
return $this->render('site/new.html.twig', [
'site' => $site,
'form' => $form->createView(),
]);
}
/**
* #Route("/{id}", name="site_show", methods={"GET"})
*/
public function show(Site $site, MediaRepository $mediarepository, $id): Response
{
$media = $mediarepository->findBy(
['site'=>$id]
);
return $this->render('site/show.html.twig', [
'site' => $site,
'media' => $media,
]);
}
/**
* #Route("/{id}/edit", name="site_edit", methods={"GET","POST"})
*/
public function edit(Request $request, Site $site): Response
{
$form = $this->createForm(SiteType::class, $site);//j'appelle le form
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
//on recupère les medias transmises
$media = $form->get('site')->getData();
//on boucle sur les medias
foreach($media as $medi){
//on génère un nouveau nom de fichier
$fichier = md5(uniqid()) . '.' . $medi->guessExtension();
//on copie le fichier dans le dossier img
$medi->move(
$this->getParameter('images_directory'),
$fichier
);
//on stocke l'image dans la bdd
$img = new Media();
$img->setNom($fichier);
$site->addMedium($img);
}
$this->getDoctrine()->getManager()->flush();
return $this->redirectToRoute('site_index');
}
return $this->render('site/edit.html.twig', [
'site' => $site,
'form' => $form->createView(),
]);
}
/**
* #Route("/{id}", name="site_delete", methods={"POST"})
*/
public function delete(Request $request, Site $site): Response
{
if ($this->isCsrfTokenValid('delete'.$site->getId(), $request->request->get('_token'))) {
$entityManager = $this->getDoctrine()->getManager();
$entityManager->remove($site);
$entityManager->flush();
}
return $this->redirectToRoute('site_index');
}
/**
* #Route("/conv", name="site_converter")
*/
public function converter():Response
{
return $this->render('site/converter.html.twig');
}
}
I checked others answers about this problem, but I still can't find out the solution. Do you have any ideas?
I put some more code so that it would be easier to understand. I hope this would be usefull. It's the route for converter that makes me problem. Thanks

Answer 1

This happens because you have a route called /conv, you should declare it before declaring /{id} route, instead Symfony searches for a Site object with id: conv which is not found.
Move converter route and method declaration before your show route and method declaration.