Symfony 3 - 无法将 token_storage 传递给订阅者

Question

I want to get current logged user in form event but for some reason I can't get it to work.

I used services to inject token_storage and create constructor method to fetch token storage instance but I got error right at constructor:

Type error: Argument 1 passed to AdminBundle\Form\EventListener\CompanyFieldSubscriber::__construct() must implement interface Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface, none given

I am not sure what is the problem and how to fix it. Does someone knows where is the problem?

EDIT 1:

I think that I found out where is the problem but I can't find "good" solution. I call this event in form type in this way:

->addEventSubscriber(new CompanyFieldSubscriber());

Problem is that I am not using 'service/dependency injection' to create event and I am sending nothing to constructor. That's why I have this error (not 100% sure to be hones).

Since I have around 20-30 forms and new forms will come in time I need to create service for each form that requires user (or token_storage) instance and as a argument call token_storage or this event subscriber as a argument of service.

I know that it will work if I create each form as a service and pass required data as arguments but is there way to process this "automatically" without creating new service for every form that needs to have some user data interaction in form events?

EDIT 2:

As suggested I tried to change event subscriber constructor but I got same error with different class name.

New code:

use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage;

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

New error:

Type error: Argument 1 passed to AdminBundle\Form\EventListener\CompanyFieldSubscriber::__construct() must be an instance of Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage, none given

This is code I am using:

Services:

admin.form.event_listener.company:
    class:  AdminBundle\Form\EventListener\CompanyFieldSubscriber
    arguments: ['@security.token_storage']
    tags:
        - { name: form.event_listener }

Event Listener:

namespace AdminBundle\Form\EventListener;

use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;

class CompanyFieldSubscriber implements EventSubscriberInterface
{
    private $tokenStorage;

    private $user;

    public function __construct(TokenStorageInterface $tokenStorage)
    {
        $this->tokenStorage = $tokenStorage;
        $this->user = $this->tokenStorage->getToken()->getUser();
    }

    public static function getSubscribedEvents()
    {
        return [
            FormEvents::PRE_SET_DATA => 'preSetData',
            FormEvents::PRE_SUBMIT => 'preSubmitData',

        ];
    }

    public function preSetData(FormEvent $event)
    {

        $form = $event->getForm();

        if (in_array("ROLE_SUPER_ADMIN", $this->user->getRoles())) {
            $form->add('company', EntityType::class, [
                'class' => 'AppBundle:Company',
                'choice_label' => 'name'
            ]);
        }
    }

    public function preSubmitData(FormEvent $event)
    {

        $form = $event->getForm();
        $bus = $form->getData();


        if (!in_array("ROLE_SUPER_ADMIN", $this->user->getRoles())) {
            $bus->setCompany($this->user->getCompany());

        }
    }
}

Answer 1

You call subscriber in wrong way when you use:

new CompanyFieldSubscriber()

You do not pass TokenStorageInterface to subscriber constructor. Call it as a service, if it is in controller then:

->addEventSubscriber($this->get('admin.form.event_listener.company'));

if it is in form than pass from controller to form

$this->get('admin.form.event_listener.company') 

as option and then use it in form

Answer 2

for Symfony >= 4

use Symfony\Component\Security\Core\Security;

class ExampleService
{
    private $security;

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

    public function someMethod()
    {
        $user = $this->security->getUser();
    }
}

See doc: https://symfony.com/doc/current/security.html#fetching-the-user-from-a-service