Symfony 4.4 - 在数据库中添加多对多关系的问题

如何解决Symfony 4.4 - 在数据库中添加多对多关系的问题

我对多对多关系有点问题。我有一个用户类和一个技能类（能力），我将它们与多对多关系联系起来，这样我就得到了 Skill_user（competence_user）表。问题是我无法通过表单向该表添加数据..感谢您的帮助..

ps：我有这个错误：

属性“competences”和方法“getCompetences()”、“competences()”、“isCompetences()”、“hasCompetences()”、“__get()”都不存在并且在类中具有公共访问权限“应用\实体\能力”。

能力类：

<?php

namespace App\Entity;

use App\Repository\CompetenceRepository;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity(repositoryClass=CompetenceRepository::class)
 */
class Competence
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $nom;

    /**
     * @ORM\ManyToMany(targetEntity=User::class,inversedBy="competences")
     */
    private $apprenant;

    public function __construct()
    {
        $this->apprenant = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getNom(): ?string
    {
        return $this->nom;
    }

    public function setNom(string $nom): self
    {
        $this->nom = $nom;

        return $this;
    }

    /**
     * @return Collection|User[]
     */
    public function getApprenant(): Collection
    {
        return $this->apprenant;
    }

    public function addApprenant(User $apprenant): self
    {
        if (!$this->apprenant->contains($apprenant)) {
            $this->apprenant[] = $apprenant;
        }

        return $this;
    }

    public function removeApprenant(User $apprenant): self
    {
        $this->apprenant->removeElement($apprenant);

        return $this;
    }
}

用户类：

<?php namespace App\Entity; use App\Repository\CompetenceRepository; use Doctrine\Common\Collections\ArrayCollection; use Doctrine\Common\Collections\Collection; use Doctrine\ORM\Mapping as ORM; /** * @ORM\Entity(repositoryClass=CompetenceRepository::class) */ class Competence { /** * @ORM\Id * @ORM\GeneratedValue * @ORM\Column(type="integer") */ private $id; /** * @ORM\Column(type="string",inversedBy="competences") */ private $apprenant; public function __construct() { $this->apprenant = new ArrayCollection(); } public function getId(): ?int { return $this->id; } public function getNom(): ?string { return $this->nom; } public function setNom(string $nom): self { $this->nom = $nom; return $this; } /** * @return Collection|User[] */ public function getApprenant(): Collection { return $this->apprenant; } public function addApprenant(User $apprenant): self { if (!$this->apprenant->contains($apprenant)) { $this->apprenant[] = $apprenant; } return $this; } public function removeApprenant(User $apprenant): self { $this->apprenant->removeElement($apprenant); return $this; } }

表格：

<?php

namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;
use App\Repository\UserRepository;
use Doctrine\Common\Collections\Collection;
use Doctrine\Common\Collections\ArrayCollection;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;

/**
 * @ORM\Entity(repositoryClass=UserRepository::class)
 * @ORM\Table(name="`user`")
 * @UniqueEntity(
 * fields= {"email"},* message= "L'email que vous avez indiquez est déjà utilisé")
 */
class User implements UserInterface
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $username;

    /**
     * @ORM\Column(type="json")
     */
    private $roles = [];

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $email;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $password;

    /**
     * @Assert\EqualTo(propertyPath = "password",message="Votre mot de passe doit être identique à celui entré au dessus")
     */
    public $confirm_password;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $nom;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $prenom;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $adresse;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $CP;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $Ville;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $tel;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $portfolio;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $github;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $CV;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $promotion;

    /**
     * @ORM\Column(type="string",length=255)
     */
    private $avatar;

    /**
     * @ORM\Column(type="integer")
     */
    private $mobile;

    /**
     * @ORM\Column(type="integer")
     */
    private $mobileZone;

    /**
     * @ORM\OneToMany(targetEntity=Candidature::class,mappedBy="apprenant")
     */
    private $candidatures;

    /**
     * @ORM\ManyToMany(targetEntity=Competence::class,mappedBy="apprenant")
     */
    private $competences;

    public function __construct()
    {
        $this->candidatures = new ArrayCollection();
        $this->competences = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getUsername(): ?string
    {
        return $this->username;
    }

    public function setUsername(string $username): self
    {
        $this->username = $username;

        return $this;
    }

    public function getRoles(): array
    {
        $roles = $this->roles;
        $roles[] = 'ROLE_USER';

        return array_unique($roles);
    }

    public function setRoles(array $roles): self
    {
        $this->roles = $roles;

        return $this;
    }

    public function getEmail(): ?string
    {
        return $this->email;
    }

    public function setEmail(string $email): self
    {
        $this->email = $email;

        return $this;
    }

    public function getPassword(): ?string
    {
        return $this->password;
    }

    public function setPassword(string $password): self
    {
        $this->password = $password;

        return $this;
    }

    public function getNom(): ?string
    {
        return $this->nom;
    }

    public function setNom(string $nom): self
    {
        $this->nom = $nom;

        return $this;
    }

    public function getPrenom(): ?string
    {
        return $this->prenom;
    }

    public function setPrenom(string $prenom): self
    {
        $this->prenom = $prenom;

        return $this;
    }

    public function getAdresse(): ?string
    {
        return $this->adresse;
    }

    public function setAdresse(string $adresse): self
    {
        $this->adresse = $adresse;

        return $this;
    }

    public function getCP(): ?string
    {
        return $this->CP;
    }

    public function setCP(string $CP): self
    {
        $this->CP = $CP;

        return $this;
    }

    public function getVille(): ?string
    {
        return $this->Ville;
    }

    public function setVille(string $Ville): self
    {
        $this->Ville = $Ville;

        return $this;
    }

    public function getTel(): ?string
    {
        return $this->tel;
    }

    public function setTel(string $tel): self
    {
        $this->tel = $tel;

        return $this;
    }

    public function getPortfolio(): ?string
    {
        return $this->portfolio;
    }

    public function setPortfolio(string $portfolio): self
    {
        $this->portfolio = $portfolio;

        return $this;
    }

    public function getGithub(): ?string
    {
        return $this->github;
    }

    public function setGithub(string $github): self
    {
        $this->github = $github;

        return $this;
    }

    public function getCV(): ?string
    {
        return $this->CV;
    }

    public function setCV(string $CV): self
    {
        $this->CV = $CV;

        return $this;
    }

    public function getPromotion(): ?string
    {
        return $this->promotion;
    }

    public function setPromotion(string $promotion): self
    {
        $this->promotion = $promotion;

        return $this;
    }

    public function getAvatar(): ?string
    {
        return $this->avatar;
    }

    public function setAvatar(string $avatar): self
    {
        $this->avatar = $avatar;

        return $this;
    }

    public function getMobile(): ?int
    {
        return $this->mobile;
    }

    public function setMobile(int $mobile): self
    {
        $this->mobile = $mobile;

        return $this;
    }

    public function getMobileZone(): ?int
    {
        return $this->mobileZone;
    }

    public function setMobileZone(int $mobileZone): self
    {
        $this->mobileZone = $mobileZone;

        return $this;
    }

    /**
     * @return Collection|Candidature[]
     */
    public function getCandidatures(): Collection
    {
        return $this->candidatures;
    }

    public function addCandidature(Candidature $candidature): self
    {
        if (!$this->candidatures->contains($candidature)) {
            $this->candidatures[] = $candidature;
            $candidature->setApprenant($this);
        }

        return $this;
    }

    public function removeCandidature(Candidature $candidature): self
    {
        if ($this->candidatures->removeElement($candidature)) {
            // set the owning side to null (unless already changed)
            if ($candidature->getApprenant() === $this) {
                $candidature->setApprenant(null);
            }
        }

        return $this;
    }

    /**
     * @return Collection|Competence[]
     */
    public function getCompetences(): Collection
    {
        return $this->competences;
    }

    public function addCompetence(Competence $competence): self
    {
        if (!$this->competences->contains($competence)) {
            $this->competences[] = $competence;
            $competence->addApprenant($this);
        }

        return $this;
    }

    public function removeCompetence(Competence $competence): self
    {
        if ($this->competences->removeElement($competence)) {
            $competence->removeApprenant($this);
        }

        return $this;
    }


    public function eraseCredentials()
    {
        
    }
    public function getSalt()
    {
        
    }
}