How remove registry from Many To Many relationship - Doctrine 2 - doctrine-orm

Question

I'm trying remove a registry from my database using doctrine 2, but I'm getting the follow error:
Catchable fatal error: Argument 1 passed to Doctrine\ORM\Mapping\DefaultQuoteStrategy::getJoinTableName() must be an array, null given, called in /home/triangulum/www/pedal/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php on line 1020 and defined in /home/triangulum/www/pedal/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/DefaultQuoteStrategy.php on line 86
I have 3 tables:
grupo = id, name
permissao = id, name
grupo_permissao = grupo_id, permissao_id
My entitys:
Grupo:
<?php
namespace User\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* #ORM\Entity
* #ORM\Table(name="grupo")
* #ORM\Entity(repositoryClass="User\Entity\GrupoRepository")
*/
class Grupo {
public function __construct($options=null) {
Configurator::configure($this, $options);
$this->permissoes = new ArrayCollection();
}
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue
* #var int
*/
protected $id;
/**
* #ORM\Column(type="text")
* #var string
*/
protected $nome;
/**
* #ORM\ManyToMany(targetEntity="User\Entity\Permissao", mappedBy="grupo", cascade={"remove"})
*/
protected $permissoes;
public function getPermissoes()
{
return $this->permissoes;
}
public function getId() {
return $this->id;
}
public function setId($id) {
$this->id = $id;
}
public function getNome() {
return $this->nome;
}
public function setNome($nome) {
$this->nome = $nome;
}
public function toArray()
{
return array
(
'id' => $this->getId(),
'nome' => $this->getNome()
);
}
}
?>
Permissao:
<?php
namespace User\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* #ORM\Entity
* #ORM\Table(name="permissao")
* #ORM\Entity(repositoryClass="User\Entity\PermissaoRepository")
*/
class Permissao {
public function __construct($options=null) {
Configurator::configure($this, $options);
$this->grupos = new ArrayCollection();
}
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue
* #var int
*/
protected $id;
/**
* #ORM\Column(type="text")
* #var string
*/
protected $nome;
/**
* #ORM\ManyToMany(targetEntity="User\Entity\Grupo", inversedBy="permissao", cascade={"persist", "remove"})
* #ORM\JoinTable(name="grupo_permissao",
* joinColumns={#ORM\JoinColumn(name="permissao_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="grupo_id", referencedColumnName="id")}
* )
*/
protected $grupos;
public function getGrupos() {
return $this->grupos;
}
public function getId() {
return $this->id;
}
public function setId($id) {
$this->id = $id;
}
public function getNome() {
return $this->nome;
}
public function setNome($nome) {
$this->nome = $nome;
}
public function toArray()
{
return array
(
'id' => $this->getId(),
'nome' => $this->getNome()
);
}
}
?>
remove:
public function delete($id)
{
$entity = $this->entityManager->find('User\Entity\Grupo', $id);
if($entity)
{
$this->entityManager->remove($entity);
$this->entityManager->flush();
return $id;
}
}
What am I doing wrong?

Answer 1

I think you have a problem with your mappedBy and inversedBy attributes in the manyToMany annotations. They should match the other entities property name, grupos and permissoes. Try this:
/**
* #ORM\ManyToMany(targetEntity="User\Entity\Permissao", mappedBy="grupos", cascade={"remove"})
*/
protected $permissoes;
/**
* #ORM\ManyToMany(targetEntity="User\Entity\Grupo", inversedBy="permissoes", cascade={"persist", "remove"})
* #ORM\JoinTable(name="grupo_permissao",
* joinColumns={#ORM\JoinColumn(name="permissao_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="grupo_id", referencedColumnName="id")}
* )
*/
protected $grupos;