Entity showing problems in symfony - php

Question

I'm creating a little QA app. I've got Entity Answer which is related to User and Question. I am trying to make a creating form for Answer. I am able to show the list of all the answers, but when it comes to creating a new, there is a problem.
the error
Here is my AnswerEntity code:
namespace App\Entity;
use App\Repository\AnswerRepository;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass=AnswerRepository::class)
* #ORM\Table(name="answers")
*/
class Answer
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=200)
*/
private $answer_text;
/**
* #ORM\ManyToOne(targetEntity=Question::class, inversedBy="answer")
* #ORM\JoinColumn(nullable=false)
*/
private $question;
public function getId(): ?int
{
return $this->id;
}
public function getAnswerText(): ?string
{
return $this->answer_text;
}
public function setAnswerText(string $answer_text): void
{
$this->answer_text = $answer_text;
}
public function getQuestion(): ?Question
{
return $this->question;
}
public function setQuestion(?Question $question): void
{
$this->question = $question;
}
}
and the code for AnswerForm
/**
* Answer type.
*/
namespace App\Form;
use App\Entity\Answer;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
/**
* Class AnswerType.
*/
class AnswerType extends AbstractType
{
/**
* Builds the form.
*
* This method is called for each type in the hierarchy starting from the
* top most type. Type extensions can further modify the form.
*
* #see FormTypeExtensionInterface::buildForm()
*
* #param \Symfony\Component\Form\FormBuilderInterface $builder The form builder
* #param array $options The options
*/
public function buildForm(FormBuilderInterface $builder, array $options): void
{
$builder->add(
'AnswerText',
TextType::class,
[
'label' => 'label_answertext',
'required' => true,
'attr' => ['max_length' => 200],
]
);
}
/**
* Configures the options for this type.
*
* #param \Symfony\Component\OptionsResolver\OptionsResolver $resolver The resolver for the options
*/
public function configureOptions(OptionsResolver $resolver): void
{
$resolver->setDefaults(['data_class' => Answer::class]);
}
/**
* Returns the prefix of the template block name for this type.
*
* The block prefix defaults to the underscored short class name with
* the "Type" suffix removed (e.g. "UserProfileType" => "user_profile").
*
* #return string The prefix of the template block name
*/
public function getBlockPrefix(): string
{
return 'answer';
}
}
and also Answer Controller
/**
* Answer Controller
*/
namespace App\Controller;
use App\Entity\Answer;
use App\Entity\Question;
use App\Form\AnswerType;
use App\Repository\AnswerRepository;
use Symfony\Component\Form\Extension\Core\Type\FormType;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Knp\Component\Pager\PaginatorInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Flex\PackageFilter;
use Symfony\Component\Routing\Annotation\Route;
/**
* Class AnswerController.
*
* #Route("/answer")
*/
class AnswerController extends AbstractController
{
private $answerRepository;
private $answer;
private $paginator;
/**
* AnswerController constructor
*
* #param \App\Repository\AnswerRepository $answerRepository Answer Repository
* #param \Knp\Component\Pager\PaginatorInterface $paginator
*/
public function __construct(AnswerRepository $answerRepository, PaginatorInterface $paginator)
{
$this->answerRepository = $answerRepository;
$this->paginator = $paginator;
}
/**
* Index action.
*
* #param \Symfony\Component\HttpFoundation\Request $request HTTP request
* #return \Symfony\Component\HttpFoundation\Response HTTP response
*
* #Route(
* "/",
* methods={"GET"},
* name="answer_index",
* )
*/
public function index(Request $request, PaginatorInterface $paginator, AnswerRepository $answerRepository): Response
{
$pagination = $paginator->paginate(
$answerRepository->queryAll(),
$request->query->getInt('page', 1),
AnswerRepository::PAGINATOR_ITEMS_PER_PAGE
);
return $this->render(
'answer/index.html.twig',
['pagination' => $pagination]
);
}
/**
* Create action.
*
* #param \Symfony\Component\HttpFoundation\Request $request HTTP request
*
* #param \App\Repository\AnswerRepository $answerRepository Answer repository
* #param \App\Entity\Answer $answer Answer Entity
*
* #return \Symfony\Component\HttpFoundation\Response HTTP response
*
* #throws \Doctrine\ORM\ORMException
* #throws \Doctrine\ORM\OptimisticLockException
*
* #Route(
* "/create",
* methods={"GET", "POST"},
* name="answer_create",
* )
*/
public function create(Request $request, AnswerRepository $answerRepository, Answer $answer): Response
{
$answer = new Answer();
$form = $this->createForm(AnswerType::class, $answer);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$answerRepository->save($answer);
$this->addFlash('success', 'answer_created_successfully');
return $this->redirectToRoute('question_index');
}
return $this->render(
'answer/create.html.twig',
['form' => $form->createView()]
);
}
}
And also, the questions is.., how to route answer/create to make it the answer to the question? I mean, I've localhost/question/{questionid} and I want to create the question here.
Thanks for your help!

Answer 1

Your error is a ParamConverter error. In your controller you ask symfony to give you an Answer $answer but it cannot provide it because there's no way to do it. you don't need this param in your controller's method.
Also I doubt your AnswerType will work since your property is named answer_text and your field is named AnserText. They must match.