Silex + Doctrine2 ORM + Dropdown (EntityType) - symfony

Question

I have a controller that renders a form that is suppose to have a dropdown with titles mapped against a client_user entity. Below is code I use in my controller to create the form:
$builder = $this->get(form.factory);
$em = $this->get('doctrine.entity_manager');
$form = $builder->createBuilder(new ClientUserType($em), new ClientUser())->getForm();
Below is my ClientUserType class with a constructor that I pass the entity manager on:
<?php
namespace Application\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
class ClientUserType extends AbstractType
{
protected $entityManager;
public function __construct($entityManager)
{
$this->entityManager = $entityManager;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('title', EntityType::class, array(
'class' => '\\Application\\Model\\Entity\\Title',
'em' => $this->entityManager
))
->add('name')
->add('surname')
->add('contact')
->add('email');
}
public function getName()
{
return 'client_user_form';
}
}
I keep on getting this catchable fatal error below and have no idea what I need to do in order to get a dropdown with titles from a database with doctrine.
Catchable fatal error: Argument 1 passed to Symfony\Bridge\Doctrine\Form\Type\DoctrineType::__construct() must be an instance of Doctrine\Common\Persistence\ManagerRegistry, none given, called in D:\web\playground-solutions\vendor\symfony\form\FormRegistry.php on line 90 and defined in D:\web\playground-solutions\vendor\symfony\doctrine-bridge\Form\Type\DoctrineType.php on line 111
Reading from that error I have no idea where I need to create a new instance of ManagerRegistry registry as it appears that the entity manager does not work. I am also thinking perhaps I need to get the ManagerRegistry straight from the entity manager itself.
Can someone please help explain the simplest way to get this to work? What could I be missing?

Answer 1

Seems that doctrine-bridge form component is not configured.
Add class
namespace Your\Namespace;
use Doctrine\Common\Persistence\AbstractManagerRegistry;
use Silex\Application;
class ManagerRegistry extends AbstractManagerRegistry
{
protected $container;
protected function getService($name)
{
return $this->container[$name];
}
protected function resetService($name)
{
unset($this->container[$name]);
}
public function getAliasNamespace($alias)
{
throw new \BadMethodCallException('Namespace aliases not supported.');
}
public function setContainer(Application $container)
{
$this->container = $container;
}
}
and configure doctrine-bridge form component
$application->register(new Silex\Provider\FormServiceProvider(), []);
$application->extend('form.extensions', function($extensions, $application) {
if (isset($application['form.doctrine.bridge.included'])) return $extensions;
$application['form.doctrine.bridge.included'] = 1;
$mr = new Your\Namespace\ManagerRegistry(
null, array(), array('em'), null, null, '\\Doctrine\\ORM\\Proxy\\Proxy'
);
$mr->setContainer($application);
$extensions[] = new \Symfony\Bridge\Doctrine\Form\DoctrineOrmExtension($mr);
return $extensions;
});
array('em') - em is key for entity manager in $application

Answer 2

For others that may find this: If you want to use the EntityType and you're not using a framework at all, you need to add the DoctrineOrmExtension to your FormFactoryBuilder like so:
$managerRegistry = new myManagerRegistry(
'myManager',
array('connection'),
array('em'),
'connection',
'em',
\Doctrine\ORM\Proxy\Proxy::class
);
// Setup your Manager Registry or whatever...
$doctrineOrmExtension = new DoctrineOrmExtension($managerRegistry);
$builder->addExtension($doctrineOrmExtension);
When you use EntityType, myManagerRegistry#getService($name) will be called. $name is the name of the service it needs ('em' or 'connection') and it needs to return the Doctrine entity manager or the Doctrine database connection, respectively.

Answer 3

In your controller, try to call the service like that:
$em = $this->get('doctrine.orm.entity_manager');
Hope it will help you.
Edit:
Sorry, I thought you was on Symfony... I have too quickly read...