ManyToMany does not work with inheritance - doctrine-orm

Question

I'm building an app that deals with givers and companies, that own givers. Both inherit a super-class called "Organization".
I want to add an unidirectional ManyToMany relationship between them, but when I ask doctrine to implement the database, and hydrate it with fixtures, I can't retrieve the givers owned by a company.
Doctrine hasn't even created a giver_company table whatsoever which could contain the relationship information as it is supposed to do.
Here is my code:
Organization
<?php
// src/Entity/Chain/Organization.php
namespace App\Entity\Chain;
use App\Entity\User;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
/**
* #ORM\Entity
* #ORM\InheritanceType("SINGLE_TABLE")
* #ORM\DiscriminatorColumn(name="type", type="string")
* #ORM\DiscriminatorMap({"association" = "Association", "super_association" = "SuperAssociation", "company" = "Company", "giver" = "Giver"})
*/
abstract class Organization
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
* #Assert\NotBlank()
*/
private $name;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $address;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $city;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $zipcode;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $SIREN;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $phone;
/**
* #ORM\OneToOne(targetEntity="App\Entity\Photo")
*/
private $photo;
/**
* #ORM\OneToMany(targetEntity="App\Entity\User", mappedBy="memberOf")
*/
private $members ;
/**
* Organization constructor.
*/
public function __construct()
{
$this->members = new ArrayCollection();
}
public function getId()
{
return $this->id;
}
public function getName()
{
return $this->name;
}
/**
* #param mixed $name
*/
public function setName($name): void
{
$this->name = $name;
}
public function getAddress()
{
return $this->address;
}
/**
* #param mixed $address
*/
public function setAddress($address): void
{
$this->address = $address;
}
public function getCity()
{
return $this->city;
}
/**
* #param mixed $city
*/
public function setCity($city): void
{
$this->city = $city;
}
public function getZipcode()
{
return $this->zipcode;
}
/**
* #param mixed $zipcode
*/
public function setZipcode($zipcode): void
{
$this->zipcode = $zipcode;
}
public function getSIREN()
{
return $this->SIREN;
}
/**
* #param mixed $SIREN
*/
public function setSIREN($SIREN): void
{
$this->SIREN = $SIREN;
}
public function getPhone()
{
return $this->phone;
}
/**
* #param mixed $phone
*/
public function setPhone($phone): void
{
$this->phone = $phone;
}
public function getPhoto()
{
return $this->photo;
}
/**
* #param mixed $photo
*/
public function setPhoto($photo): void
{
$this->photo = $photo;
}
public function getMembers()
{
return $this->members;
}
public function addMember(User $member)
{
if (!$this->members->contains($member)) {
$this->members->add($member);
}
}
public function removeMember(User $member){
$this->members->remove($member);
}
}
Giver
<?php
// src/Entity/Chain/Giver.php
namespace App\Entity\Chain;
use App\Entity\Photo;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity()
*/
class Giver extends Organization
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
*/
private $status ;
/**
* Giver constructor.
*/
public function __construct()
{
parent::__construct();
}
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
/**
* #return mixed
*/
public function getStatus()
{
return $this->status;
}
/**
* #param mixed $status
*/
public function setStatus($status): void
{
$this->status = $status;
}
}
Company
<?php
// src/Entity/Chain/Company.php
namespace App\Entity\Chain;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity()
*/
class Company extends Organization
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255, name="company_type")
*/
private $type ;
/*
* #ORM\ManyToMany(targetEntity="App\Entity\Chain\Giver")
*/
private $givers ;
/**
* Company constructor.
*/
public function __construct()
{
parent::__construct();
$this->givers = new ArrayCollection();
}
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
/**
* #return mixed
*/
public function getType()
{
return $this->type;
}
/**
* #param mixed $type
*/
public function setType($type): void
{
$this->type = $type;
}
public function getGivers()
{
return $this->givers;
}
public function addGiver(Giver $opening)
{
if (!$this->givers->contains($opening)) {
$this->givers->add($opening);
}
}
public function removeGiver(Giver $opening){
$this->givers->remove($opening);
}
}

Answer 1

Your DocBlock for givers in Company is missing an "*" at the beginning. PHPDoc
Change:
/*
* #ORM\ManyToMany(targetEntity="App\Entity\Chain\Giver")
*/
private $givers ;
to
/**
* #ORM\ManyToMany(targetEntity="App\Entity\Chain\Giver")
*/
private $givers ;