App\Entity\Post object not found by the @ParamConverter annotation.

Bonjour

Aidez-moi svp !

J'ai tout à coup cette erreur que je ne comprend pas :

Citation:

Voici mon entity Post.php

Code:

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<?php
 
/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
 
 
namespace App\Entity;
 
 
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
 
 
/**
 * @ORM\Entity(repositoryClass="App\Repository\PostRepository")
 * @ORM\Table(name="symfony_demo_post")
 *
 * Defines the properties of the Post entity to represent the blog posts.
 *
 * See https://symfony.com/doc/current/book/doctrine.html#creating-an-entity-class
 *
 * Tip: if you have an existing database, you can generate these entity class automatically.
 * See https://symfony.com/doc/current/cookbook/doctrine/reverse_engineering.html
 *
 * @author Ryan Weaver <weaverryan@gmail.com>
 * @author Javier Eguiluz <javier.eguiluz@gmail.com>
 * @author Yonel Ceruto <yonelceruto@gmail.com>
 */
class Post
{
    /**
     * Use constants to define configuration options that rarely change instead
     * of specifying them under parameters section in config/services.yaml file.
     *
     * See https://symfony.com/doc/current/best_practices/configuration.html#constants-vs-configuration-options
     */
    public const NUM_ITEMS = 5;
 
 
    /**
     * @var int
     *
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;
 
 
    /**
     * @var string
     *
     * @ORM\Column(type="string")
     * @Assert\NotBlank
     */
    private $title;
 
 
    /**
     * @var string
     *
     * @ORM\Column(type="string")
     */
    private $slug;
 
 
    /**
     * @var string
     *
     * @ORM\Column(type="string")
     * @Assert\NotBlank(message="post.blank_summary")
     */
    private $summary;
 
 
    /**
     * @var string
     *
     * @ORM\Column(type="text")
     * @Assert\NotBlank(message="post.blank_content")
     * @Assert\Length(min=10, minMessage="post.too_short_content")
     */
    private $content;
 
 
    /**
     * @var \DateTime
     *
     * @ORM\Column(type="datetime")
     * @Assert\DateTime
     */
    private $publishedAt;
 
 
 
 
    /**
     * @var User
     *
     * @ORM\ManyToOne(targetEntity="App\Entity\User")
     * @ORM\JoinColumn(nullable=false)
     */
    private $author;
 
 
    /**
     * @var Comment[]|ArrayCollection
     *
     * @ORM\OneToMany(
     *      targetEntity="Comment",
     *      mappedBy="post",
     *      orphanRemoval=true,
     *      cascade={"persist"}
     * )
     * @ORM\OrderBy({"publishedAt": "DESC"})
     */
    private $comments;
 
 
    /**
     * @var Tag[]|ArrayCollection
     *
     * @ORM\ManyToMany(targetEntity="App\Entity\Tag", cascade={"persist"})
     * @ORM\JoinTable(name="symfony_demo_post_tag")
     * @ORM\OrderBy({"name": "ASC"})
     * @Assert\Count(max="4", maxMessage="post.too_many_tags")
     */
    private $tags;
 
 
    public function __construct()
    {
        $this->publishedAt = new \DateTime();
        $this->comments = new ArrayCollection();
        $this->tags = new ArrayCollection();
        //$this->image = new UploadedFile();
    }
 
 
    public function getId(): int
    {
        return $this->id;
    }
 
 
    public function getTitle(): ?string
    {
        return $this->title;
    }
 
 
    public function setTitle(?string $title): void
    {
        $this->title = $title;
    }
 
 
    public function getSlug(): ?string
    {
        return $this->slug;
    }
 
 
    public function setSlug(?string $slug): void
    {
        $this->slug = $slug;
    }
 
 
    public function getContent(): ?string
    {
        return $this->content;
    }
 
 
    public function setContent(?string $content): void
    {
        $this->content = $content;
    }
 
 
    public function getPublishedAt(): \DateTime
    {
        return $this->publishedAt;
    }
 
 
    public function setPublishedAt(?\DateTime $publishedAt): void
    {
        $this->publishedAt = $publishedAt;
    }
 
 
    public function getAuthor(): User
    {
        return $this->author;
    }
 
 
    public function setAuthor(?User $author): void
    {
        $this->author = $author;
    }
 
 
    public function getComments(): Collection
    {
        return $this->comments;
    }
 
 
    public function addComment(?Comment $comment): void
    {
        $comment->setPost($this);
        if (!$this->comments->contains($comment)) {
            $this->comments->add($comment);
        }
    }
 
 
    public function removeComment(Comment $comment): void
    {
        $comment->setPost(null);
        $this->comments->removeElement($comment);
    }
 
 
    public function getSummary(): ?string
    {
        return $this->summary;
    }
 
 
    public function setSummary(?string $summary): void
    {
        $this->summary = $summary;
    }
 
 
    public function addTag(?Tag ...$tags): void
    {
        foreach ($tags as $tag) {
            if (!$this->tags->contains($tag)) {
                $this->tags->add($tag);
            }
        }
    }
 
 
    public function removeTag(Tag $tag): void
    {
        $this->tags->removeElement($tag);
    }
 
 
    public function getTags(): Collection
    {
        return $this->tags;
    }
}

Mon controller :

Code:

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<?php
 
namespace App\Controller;
 
 
use App\Entity\Comment;
use App\Entity\Post;
use App\Entity\User;
use App\Events;
use App\Form\CommentType;
use App\Repository\PostRepository;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Cache;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\GenericEvent;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
 
 
/**
 * @Route("/post")
 */
class BlogPostController extends Controller
{
    /**
     * @Route("/", defaults={"page": "1"}, name="post_index", methods="GET")
     * @Route("/page/{page}", requirements={"page": "[1-9]\d*"}, name="blog_index_paginated")
     */
    public function index(int $page, PostRepository $posts): Response
    {
        $latestPosts = $posts->findLatest($page);
        return $this->render('post/index.html.twig', ['posts' => $latestPosts]);
    }
 
 
 
 
    /**
     * @Route("/posts/{slug}", name="post_show", methods="GET")
     */
    public function show(Post $post): Response
    {
        return $this->render('post/show.html.twig', ['post' => $post]);
    }
 
 
    /**
     * @Route("/comment/{postSlug}/new", name="comment_new")
     * @Method("POST")
     * @Security("is_granted('IS_AUTHENTICATED_FULLY')")
     * @ParamConverter("post", options={"mapping": {"postSlug": "slug"}})
     *
     * NOTE: The ParamConverter mapping is required because the route parameter
     * (postSlug) doesn't match any of the Doctrine entity properties (slug).
     * See https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html#doctrine-converter
     */
    public function commentNew(Request $request, Post $post, EventDispatcherInterface $eventDispatcher): Response
    {
        $comment = new Comment();
        $comment->setAuthor($this->getUser());
        $post->addComment($comment);
 
 
        $form = $this->createForm(CommentType::class, $comment);
        $form->handleRequest($request);
 
 
        if ($form->isSubmitted() && $form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($comment);
            $em->flush();
 
 
            // When triggering an event, you can optionally pass some information.
            // For simple applications, use the GenericEvent object provided by Symfony
            // to pass some PHP variables. For more complex applications, define your
            // own event object classes.
            // See https://symfony.com/doc/current/components/event_dispatcher/generic_event.html
            $event = new GenericEvent($comment);
 
 
            // When an event is dispatched, Symfony notifies it to all the listeners
            // and subscribers registered to it. Listeners can modify the information
            // passed in the event and they can even modify the execution flow, so
            // there's no guarantee that the rest of this controller will be executed.
            // See https://symfony.com/doc/current/components/event_dispatcher.html
            $eventDispatcher->dispatch(Events::COMMENT_CREATED, $event);
 
 
            return $this->redirectToRoute('blog_post', ['slug' => $post->getSlug()]);
        }
 
 
        return $this->render('post/comment_form_error.html.twig', [
            'post' => $post,
            'form' => $form->createView(),
        ]);
    }
 
 
    /**
     * This controller is called directly via the render() function in the
     * blog/post_show.html.twig template. That's why it's not needed to define
     * a route name for it.
     *
     * The "id" of the Post is passed in and then turned into a Post object
     * automatically by the ParamConverter.
     */
    public function commentForm(Post $post): Response
    {
        $form = $this->createForm(CommentType::class);
 
 
        return $this->render('post/_comment_form.html.twig', [
            'post' => $post,
            'form' => $form->createView(),
        ]);
    }
 
 
 
 
}