Question

I have the following two entities:

<?php

namespace Site\AnnonceBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Site\UserBundle\Entity\User;

/**
 * Site\AnnonceBundle\Entity\Sujet
 *
 * @ORM\Table()
 * @ORM\Entity(repositoryClass="Site\AnnonceBundle\Entity\SujetRepository")
 */
class Sujet
{
    /**
     * @var integer $id
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    //Some code...

    /**
     * 
     * @ORM\ManyToOne(targetEntity="Site\UserBundle\Entity\User")
     */
    private $user;

    //getter/setter....

user Entity(FOSUserBundle) :

<?php
namespace Site\UserBundle\Entity;
use FOS\UserBundle\Entity\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table()
 * 
 */
class User extends BaseUser{


    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;    

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


}

when I created a “Sujet”, I made(in SujetController.php):

        $em = $this->getDoctrine()->getEntityManager();
        $sujet->setResolu(false);
        $em->persist($sujet);

        $em->flush();

its works, But the inserted “Sujet” in the database refer to user null… so in the second version i made this:

        $em = $this->getDoctrine()->getEntityManager();
        $sujet->setResolu(false); 
        $sujet->setUser(new User($this->get('session')->get('user_id')))  ;//the user is already in the DB
        $em->persist($sujet);
        $em->flush();

but i get this error:

A new entity was found through the relationship 'Site\AnnonceBundle\Entity\Sujet#user' that was not configured to cascade persist operations for entity: . Explicitly persist the new entity or configure cascading persist operations on the relationship. If you cannot find out which entity causes the problem implement 'Site\UserBundle\Entity\User#__toString()' to get a clue.

I do not understand, I have already worked with another ORM (JPA) and it works in that way …
how to tell “Sujet” about what is related to an entity already existing in database?

(sorry if my english is bad)

EDIT : its worked for me :

$user = $this->get('security.context')->getToken()->getUser();
$sujet->setUser($user);
$em->persist($sujet);
$em->flush();

Answer 1

Just in case, the error came from the fact you created a new User and linked it to the sujet without persisting it (as there is no cascade, the entity was linked to a none persisted entity, resulting in the error).

Your edit suggests you found a way to get the current User (this one is persisted, unlike the “new User”) you made before.

You could also have done :

$repository = $this->getDoctrine()
    ->getEntityManager()
    ->getRepository('YourBundle:User');

$user = $repository->find($iduser); 
$sujet->setUser($user);

It would have been a good solution if you wanted to make the edit “for another user”.