Проблема с сохранением данных в объекте OneToMany в Symfony

У меня есть связь OneToMany между врачом сущности и сущностями, испытываемыми и паркурами. Теперь, когда я пытаюсь сохранить данные моей формы ExperiencesType и ParcoursType, сохраняются все данные, кроме идентификатора врача.

Entity Doctor

/**
 * @ORM\OneToMany(targetEntity = "Doctix\MedecinBundle\Entity\Experiences", mappedBy = "medecin",  cascade = {"persist", "remove"})
 */
private $experiences;

/**
 * @ORM\OneToMany(targetEntity = "Doctix\MedecinBundle\Entity\Parcours", mappedBy = "medecin", cascade = {"persist", "remove"})
 */
private $parcours;

 public function __construct()
{
    $this->assurance = new \Doctrine\Common\Collections\ArrayCollection();
    $this->experiences =  new \Doctrine\Common\Collections\ArrayCollection();
    $this->parcours =  new \Doctrine\Common\Collections\ArrayCollection();
}

  /**
 * Get experiences
 *
 * @return \Doctix\MedecinBundle\Entity\Experiences
 */
public function getExperiences()
{
    return $this->experiences;
}

  /**
 * Get parcours
 *
 * @return \Doctix\MedecinBundle\Entity\Parcours
 */
public function getParcours()
{
    return $this->parcours;
}

Entity Experience

     /**
 * @ORM\ManyToOne(targetEntity = "Doctix\MedecinBundle\Entity\Medecin", inversedBy = "experiences")
 * @ORM\JoinColumn(name = "medecin_id", referencedColumnName = "id" , nullable=true)
 */
private $medecin;

  /**
 * Set medecin
 *
 * @param \Doctix\MedecinBundle\Entity\Medecin $medecin
 *
 * @return Experiences
 */
public function setMedecin(\Doctix\MedecinBundle\Entity\Medecin $medecin = null)
{
    $this->medecin = $medecin;

    return $this;
}

/**
 * Get medecin
 *
 * @return \Doctix\MedecinBundle\Entity\Medecin
 */
public function getMedecin()
{
    return $this->medecin;
}

Entity Parcours

  /**
 * @ORM\ManyToOne(targetEntity = "Doctix\MedecinBundle\Entity\Medecin", inversedBy = "parcours")
 * @ORM\JoinColumn(name = "medecin_id", referencedColumnName = "id")
 */
private $medecin;

  /**
 * Set medecin
 *
 * @param \Doctix\MedecinBundle\Entity\Medecin $medecin
 *
 * @return Parcours
 */
public function setMedecin(\Doctix\MedecinBundle\Entity\Medecin $medecin = null)
{
    $this->medecin = $medecin;

    return $this;
}

/**
 * Get medecin
 *
 * @return \Doctix\MedecinBundle\Entity\Medecin
 */
public function getMedecin()
{
    return $this->medecin;
}

Тогда это моя форма: MedecinCvEditType

  class MedecinCvEditType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->remove('user')
            ->remove('specialite')
            ->add('experiences', CollectionType::class, array(
              'entry_type' => ExperienceType::class,
              'allow_add' => true,
              'allow_delete' => true
          ))
            ->add('parcours', CollectionType::class, array(
              'entry_type' => ParcoursType::class,
              'allow_add' => true,
              'allow_delete' => true
          ));
}

/**
 * @param OptionsResolver $resolver
 */
public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'data_class' => 'Doctix\MedecinBundle\Entity\Medecin'
    ));
}

  }

Наконец мой контроллер:

Контроллер

  public function cvEditAction(Request $request)
{
    $user = $this->getUser();
    if ($user === null) {
        throw new NotFoundHttpException('Utilisateur Inexistant');
    } else {
        $em = $this->getDoctrine()->getManager();
        $repo = $em->getRepository('DoctixMedecinBundle:Medecin');
        $medecin = $repo->findOneBy(array(
            'user' => $user,
        ));
        $form = $this->createForm('Doctix\MedecinBundle\Form\MedecinCvEditType', $medecin);
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {

      $em->flush();
            // creation d'un flash bag pour une notification flash
            $request->getSession()->getFlashBag()->add('Notice', 'Cv Modifié avec succés');
            // redirection
            $url = $this->generateUrl('medecin_parametre');
            // redirection permanente avec le status http 301 ::)))))
            return $this->redirect($url, 301);

        } else {
            return $this->render('DoctixMedecinBundle:Medecin:cvedit.html.twig', array(
                'form' => $form->createView()
            ));
        }
    }

}

Это скриншоты моей базы данных:

Спасибо