Symfony: use of query builder in a Form - symfony

Question

I have a form that I am building using the FormBuilder:
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('rosters', 'entity', array(
'class' => 'ReliefAppsPlatformBundle:Roster',
'property' => 'display',
'query_builder' => function(RosterRepository $r) use ($user) {
return $r->createQueryBuilder('r')
->leftJoin('r.members', 'm')
->addSelect('m')
->where('(m.rights = :adminRight or m.rights = :managerRight) and m.user = :user')
->setParameter('adminRight', RosterMember::ADMIN_LEVEL)
->setParameter('managerRight', RosterMember::MANAGER_LEVEL)
->setParameter('user', $user);
},
'required' => true,
'expanded' => true,
'multiple' => true
))
->add('save', 'submit')
;
}
As you can see I my QueryBuilder I use $user (the current user) as a parameter.
My controler looks like that:
public function createAction(Request $request, Event $event)
{
$alert = new RosterEvent;
$alert->setEvent($event);
$user = $this->getUser();
$form = $this->createForm(new RosterEventType(), $alert, $user);
$form->handleRequest($request);
if ($form->isValid()) { ....
My issue is that I need to pass the $user to the formbiulder. But I get "Catchable Fatal Error: Argument 3 passed to Symfony\Bundle\FrameworkBundle\Controller\Controller::createForm() must be of the type array, object given,..."
I know the problem is how I pass $user from the controller to the formbuilder. But I have no clue how to do that.
Any ideas?

Answer 1

As mentioned in the documentation, the third parameter ($options = array()) of method createForm need an array and not a object.
This line is wrong
$form = $this->createForm(new RosterEventType(), $alert, $user);
The $options parameter can be used for example like this
$form = $this->createForm(new TaskType(), $task, array(
'action' => $this->generateUrl('target_route'),
'method' => 'GET',
));
If you want pass a parameter to the form, you can try something like this
Controller
$form = $this->createForm(new RosterEventType($user), $alert);
Form
protected $user;
public function __construct (User $user)
{
$this->user = $user;
}
Hope it will help.

Answer 2

The third parameter of createForm is expecting an array of options so use this when creating the form:
$form = $this->createForm(new RosterEventType(), $alert, array('user'=>$user));
Then you will need to get your RosterEventType to allow the 'user' option to be provided. You can do this by overriding the setDefaultOptions function of your AbstractType and provided a default value for the option. For example you can add the following to your RosterEventType class:
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'user' => false,
));
}
If you do this then you can access the user object in your buildForm function using $options['user'].