ManyToMany, duplicate entry, table empty - forms

Question

Soo :
I have my two tables/entities texts and groups which are linked by a manytomany relationship.
I have a form where the users fill checkboxes to assign a text into one or several groups.
I have a problem though it's getting me this error
An exception occurred while executing 'INSERT INTO texte_groupe
(texte_id, groupe_id) VALUES (?, ?)' with params [2, 1]:
Here is the core of the problem ( i think?)
public function AcceptMediaAction($id) {
$em = $this->getDoctrine()->getManager();
$texte = new Texte();
$securityContext = $this->container->get('security.context');
$texte = $em->getRepository('EVeilleurDefuntBundle:Texte')->find($id);
$form = $this->createForm( new ChooseGroupeType($securityContext), $texte );
$request = $this->get('request');
$form->bind($request);
if ($request->getMethod() == 'POST') {
$groupes = $texte->getGroupes();
$statut = $texte->getStatut();
foreach ($groupes->toArray() as $groupe)
{
$texte->addGroupe($groupe);
}
$em->persist($groupe);
$em->flush();
return $this->redirect($this->generateUrl('e_veilleur_defunt_gerer_medias',
Groupe.php
/**
* #ORM\ManyToMany(targetEntity="EVeilleur\DefuntBundle\Entity\Texte",mappedBy="groupes")
*/
private $textes;
Texte.php
/**
* #ORM\ManyToMany(targetEntity="EVeilleur\DefuntBundle\Entity\Groupe",inversedBy="textes")
*/
private $groupes;
formtype
public function buildForm(FormBuilderInterface $builder, array
$options)
{
// $builder->add('statut','choice', array('choices'=> array('nonValide'=>'non Valide',
// 'Valilde'=>'suchValidation'),
// 'required'=>'true'
// )
// ) ; // , array("attr" => array("multiple" => "multiple", ))
$user = $this->securityContext->getToken()->getUser();
if (!$user) {
throw new \LogicException(
'This cannot be used without an authenticated user!'
);
}
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($user) {
$form = $event->getForm();
$formOptions = array(
'multiple' => true, //several choices
'expanded' => true, // activate checkbox instead of list
'by_reference' => false,
'required' => true|false,
'class' => 'EVeilleur\DefuntBundle\Entity\Groupe',
'query_builder' => function (EntityRepository $er) use ($user) {
// build a custom query
return $er->createQueryBuilder('u')->add('select', 'u')
->add('from', 'EVeilleurDefuntBundle:Groupe u');
// ->add('where', 'u.id = ?1')
// ->add('orderBy', 'u.name ASC');
},
);
// create the field, = $builder->add()
// field name, field type, data, options
$form->add('groupes', 'entity', $formOptions);
}
);
}
Thanks

Answer 1

Try with:
foreach ($groupes->toArray() as $groupe) {
if (!in_array($groupe, $texte->getGroupe()->toArray()) {
$texte->addGroupe($groupe);
}
}