Symfony2.3 - dynamically Generate Forms Based on user Data

I try to struggling through generating a form based on User Data with the help of the [Symfony-Book][1]

The Form appears, but the data doesn't base on the querybuilder and I have no idea, where I'm going wrong. The formular shows all objects of the entity, but not the limited defined in querybuilder

My formtype:

<?php

namespace Pso\ProjectBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
use Doctrine\ORM\EntityRepository;


class ProjectuserType extends AbstractType
{

    private $id;

    public function __construct($id)
    {$this->id = $id;}

public function buildForm(FormBuilderInterface $builder, array $options)
{

$id = $this->id;

$builder->addEventListener(
        FormEvents::PRE_SET_DATA,
        function (FormEvent $event) use ($id) {
            $form = $event->getForm();

            $formOptions = array(
                'class' => 'Pso\LogBundle\Entity\User',
                'property' => 'username',
                'multiple' => 'true',
                'expanded' => 'true',
                'query_builder' => function (EntityRepository $er) use($id)  {
                    return $er->createQueryBuilder('x')->FROM('PsoProjectBundle:project', 'p')
                                                       ->JOIN('p.users','u')
                                                       ->WHERE('p.id <>:id')
                                                       ->setParameter('id', $id)
                                                        ;
                },
            );

            $form->add('user', 'entity', $formOptions)
                 ->add('Submit', 'submit', array(
            'attr'=> array (
                'formnovalidate' => 'formnovalidate'
            )
        ));
        }
    );
}

public function getName()
{
    return 'Projectuser';
}


}

UPDATE:

Now I try to change my query in the builder so that it looks:

<?php

namespace Pso\ProjectBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
use Doctrine\ORM\EntityRepository;


class ProjectuserType extends AbstractType
{

private $id;

public function __construct($id)
{
    $this->id = $id;
}

public function buildForm(FormBuilderInterface $builder, array $options)
{

$id = $this->id;

$builder->addEventListener(
        FormEvents::PRE_SET_DATA,
        function (FormEvent $event) use ($id) {
            $form = $event->getForm();

            $formOptions = array(
                'class' => 'Pso\LogBundle\Entity\User',
                'property' => 'username',
                'multiple' => 'true',
                'expanded' => 'true',
                'query_builder' => function (EntityRepository $er) use($id)  {


                    return $er->createQueryBuilder('x')->SELECT('u')
                                                       ->FROM('PsoLogBundle:user', 'u')
                                                       ->JOIN('PsoProjectBundle:project', 'p')
                                                       ->WHERE('p.id <>:id')
                                                       ->setParameter('id', $id)
                                                        ;
                },
            );


            $form->add('user', 'entity', $formOptions)
                 ->add('Submit', 'submit', array(
            'attr'=> array (
                'formnovalidate' => 'formnovalidate'
            )
        ));
        }
    );
}

public function getName()
{
    return 'Projectuser';
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'data_class'  => 'Pso\LogBundle\Entity\User',
    ));
}

}

In this case I get the error

[Syntax Error] line 0, col 79: Error: Expected Doctrine\ORM\Query \Lexer::T_WITH, got ','

UPDATE:

Controller:

$form = $this->createFormBuilder()
         ->add('projectuser', ['except_id' => $id])
         ->getForm();
    $form->handleRequest($request);
    $build['form'] = $form->createView();   
    return $this->render('PsoProjectBundle:Project:editProject.html.twig', array('projects' =>$projects, 'users' =>$users, 'form' => $form->createView(), ));

ProjectuserType.php:

<?php
class ProjectuserType extends AbstractType
{

public function buildForm(FormBuilderInterface $builder, array $options)
{
\assert(isset($options['except_id']));
$exceptId = $options['except_id'];

$formOptions = [
  'class' => User::class, // PHP5.5
  'property' => 'username',
  'multiple' => 'true',
  'expanded' => 'true',
  'query_builder' => function (EntityRepository $er) use($exceptId)  {
    return $er
      ->createQueryBuilder('u')
      ->join('u.project', 'p')
      ->where('p.id <> :id')
      ->setParameter('id', $exceptId)
    ;
  }
];

$submitOptions = [
  'attr'=> [
    'formnovalidate' => 'formnovalidate'
  ]
];


$builder
  ->add('user', 'entity', $formOptions)
  ->add('Submit', 'submit', $submitOptions)
;
}

public function getName()
{
return 'Projectuser';
  }

  public function setDefaultOptions(OptionsResolverInterface $resolver)
{
  $resolver->setDefaults([
    'data_class'  => FormUser::class, // that line is wrong in your code! it must be a class with attributes 'user' and 'submit', see the "builder->add" calls
]);

$resolver->setRequired(['except_id']);
 }
}