Symfony 4\ ManyToMany关系-无法确定属性的访问类型
Symfony 4\ ManyToMany关系-无法确定属性的访问类型
提问于 2019-03-03 20:21:52
大家好，
我目前正在做一个关于Symfony 4的项目。我在两个理论实体(Groupe和Contact)之间有一个ManyToMany关系，但是当我试图创建一个新的联系人时，我有以下错误：(我强调实体是用make: entity创建的)。谢谢您的帮助。
异常:无法确定"App\Entity\Contact“类中属性"groupe”的访问类型:可以用"addGroupe()“、"removeGroupe()”方法定义类“App\Entity\Contact”中的属性"groupe“，但新值必须是给定的的数组或实例。
//Contact.php
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\ContactRepository")
* @ORM\Table(name="cm_f_contact")
*/
class Contact
{
// .....
/**
* @ORM\ManyToMany(targetEntity="App\Entity\Groupe", inversedBy="contacts")
* @Assert\Valid
*/
private $groupe;
public function __construct()
{
$this->groupe = new ArrayCollection();
}
/**
* @return Collection|Groupe[]
*/
public function getGroupe(): Collection
{
return $this->groupe;
}
public function addGroupe(Groupe $groupe): self
{
if (!$this->groupe->contains($groupe)) {
$this->groupe[] = $groupe;
}
return $this;
}
public function removeGroupe(Groupe $groupe): self
{
if ($this->groupe->contains($groupe)) {
$this->groupe->removeElement($groupe);
}
return $this;
}
}//Groupe.php
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\GroupeRepository")
* @ORM\Table(name="cm_f_group")
*/
class Groupe
{
/**
* @ORM\ManyToMany(targetEntity="App\Entity\Contact", mappedBy="groupe")
*/
private $contacts;
public function __construct()
{
$this->contacts = new ArrayCollection();
}
/**
* @return Collection|Contact[]
*/
public function getContacts(): Collection
{
return $this->contacts;
}
public function addContact(Contact $contact): self
{
if (!$this->contacts->contains($contact)) {
$this->contacts[] = $contact;
$contact->addGroupe($this);
}
return $this;
}
public function removeContact(Contact $contact): self
{
if ($this->contacts->contains($contact)) {
$this->contacts->removeElement($contact);
$contact->removeGroupe($this);
}
return $this;
}
}//ContactController.php
<?php
namespace App\Controller;
use App\Entity\Contact;
use App\Form\ContactType;
use App\Repository\ContactRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
/**
* @Route("/contact")
*/
class ContactController extends AbstractController
{
//...
/**
* @Route("/new", name="contact_new", methods={"GET","POST"})
*/
public function new(Request $request): Response
{
$contact = new Contact();
$form = $this->createForm(ContactType::class, $contact);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$entityManager = $this->getDoctrine()->getManager();
$entityManager->persist($contact);
$entityManager->flush();
return $this->redirectToRoute('contact_index');
}
return $this->render('contact/new.html.twig', [
'contact' => $contact,
'form' => $form->createView(),
]);
}
}ContactType.php`
<?php
namespace App\Form;
use App\Entity\Contact;
use App\Entity\Groupe;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class ContactType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('firstname')
->add('lastname')
->add('email')
->add('sms_no')
->add('birth_date')
->add('created_by')
->add('groupes', EntityType::class, [
'class' => Groupe::class,
'choice_label' => 'name',
])
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => Contact::class,
]);
}
}Stack Overflow用户
发布于 2019-03-04 06:29:14
Symfony表单将使用get<Property>和set<Property>来读取和写入模型数据。在这种情况下，由于在联系人中没有setGroupe()方法，所以表单在提交表单时不知道如何将值写回实体。
对于这个场景，Symfony表单有数据映射器。
数据映射器负责从父窗体读取和写入数据。
在您的情况下，您可能需要这样的东西：
public function mapFormToData($forms, &$data)
{
$forms = iterator_to_array($forms);
// "groupe" is the name of the field in the ContactType form
$groupe = $forms['groupe'];
foreach ($groupe as $group) {
// $data should be a Contact object
$data->addGroup($group);
}
// ...Map remaining form fields to $data
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/54973362
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