Symfony2 how to join on many-to-many relations using querybuilder? - php

Question

Being new to symfony2 and querybuilder, I am trying to select all my containers but limiting the result to only those for which the logged-in user has access.
With the current code I get this error:
Notice: Undefined index: Container in /var/www/biztv_symfony/vendor/doctrine/lib/Doctrine/ORM/Query/SqlWalker.php line 746
Here is my attempt at the query (I have tried a couple of options from this and other forum sites and still can't seem to understand it right...)
public function indexAction()
{
//Get the requisits
$companyId = $this->container->get('security.context')->getToken()->getUser()->getCompany()->getId();
$em = $this->getDoctrine()->getEntityManager();
//Fetch the containers
$repository = $this->getDoctrine()->getRepository('BizTVContainerManagementBundle:Container');
$query = $repository->createQueryBuilder('c')
->innerJoin('c.users','u')
->where('c.company = :company')
->setParameter('company', $companyId)
->orderBy('c.name', 'ASC')
->getQuery();
$containers = $query->getResult();
I keep track of access with a many-to-many relation, this is my user entity...
<?php
// src/BizTV/UserBundle/Entity/User.php
namespace BizTV\UserBundle\Entity;
use FOS\UserBundle\Entity\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;
use BizTV\BackendBundle\Entity\company as company;
/**
* #ORM\Entity
* #ORM\Table(name="fos_user")
*/
class User extends BaseUser
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #var object BizTV\BackendBundle\Entity\company
*
* #ORM\ManyToOne(targetEntity="BizTV\BackendBundle\Entity\company")
* #ORM\JoinColumn(name="company", referencedColumnName="id", nullable=false)
*/
protected $company;
/**
* #ORM\ManyToMany(targetEntity="BizTV\ContainerManagementBundle\Entity\Container", inversedBy="User")
* #ORM\JoinTable(name="access")
*/
private $access;
public function __construct()
{
parent::__construct();
$this->access = new \Doctrine\Common\Collections\ArrayCollection();
}
//getters and setters...
This is my container entity:
<?php
namespace BizTV\ContainerManagementBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use BizTV\UserBundle\Entity\User as user;
/**
* BizTV\ContainerManagementBundle\Entity\Container
*
* #ORM\Table(name="container")
* #ORM\Entity
*/
class Container
{
/**
* #var integer $id
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #var string $name
* #Assert\NotBlank(message = "Du måste ange ett namn för området")
* #ORM\Column(name="name", type="string", length=255)
*/
private $name;
//TODO: form handler assuring no name is used twice in same company
/**
* #var object BizTV\BackendBundle\Entity\company
*
* #ORM\ManyToOne(targetEntity="BizTV\BackendBundle\Entity\company")
* #ORM\JoinColumn(name="company", referencedColumnName="id", nullable=false)
*/
protected $company;
/**
* #ORM\ManyToMany(targetEntity="BizTV\UserBundle\Entity\User", mappedBy="Container")
*/
private $users;
public function __construct() {
$this->users = new \Doctrine\Common\Collections\ArrayCollection();
}

Answer 1

In the Container entity, when you specify the $users property mapping, the value of mappedBy is important: you need to specify the name of the inverse property in the User class.
Here, we have, Container::$users <-> User::$access.
Change your annotations to:
class User
{
/**
* #ORM\ManyToMany(targetEntity="BizTV\ContainerManagementBundle\Entity\Container", inversedBy="users")
* #ORM\JoinTable(name="access")
*/
private $access;
}
class Container
{
/**
* #ORM\ManyToMany(targetEntity="BizTV\UserBundle\Entity\User", mappedBy="access")
*/
private $users;
}
I encourage you to read the doctrine orm documentation part about associations, and verify and fix this in all your associations.