CODEWITHSUNDEEP
phpsymfonydependency-injectiondoctrine-orm
Yacine TAZDAIT
Yacine TAZDAIT

Reputation: 35

How to inject entity depencies into a controller in symfony 5.2?

I'm a beginner in symfony and I would like to inject my post entity into a method of my controller.

However, I've the following error fired :

Unable to guess how to get a Doctrine instance from the request information for parameter "post".

Here is my code :

/**
 * @Route("/post/article/new", name="new.html.twig")
 * @param Request $request
 * @param Posts $posts
 * @return Response
*/
public function newArticle(Request $request, Posts $posts): Response
{
    $post = $posts;
    $article = new Articles();
    $post->setAuthor(1);
    $form =  $this->createForm(PostsType::class, $post);
    $form->handleRequest($request);

    if($form->isSubmitted() && $form->isValid()) {
        $this->em->persist($post);
        $this->em->flush();
        $article->setPost($post->getId());
        $themes = $form->get('themes')->getData();
        $article->setThemes(implode(',', $themes));
        $this->em->persist($post);
        $this->em->flush();

        return  $this->redirectToRoute('home.html.twig');
    }

    return $this->render('post/article.html.twig', [
        'formArticle' => $form->createView()
    ]);
}

Upvotes: 0

Views: 834

Answers (1)

Arleigh Hix
Arleigh Hix

Reputation: 10897

You need a reference to the Post in the route, like a slug for the id or another unique field.
@Route("/post/{id}/article/new", ...

Otherwise Symfony has no idea which Post to load.

Upvotes: 1

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