Symfony2 PrePersist ORM ne fonctionne pas

prePersist() la méthode de mon entité n'est pas invoquée.

<?php
namespace Acme\DemoBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* Users
*
* @ORM\Table(name="users")
* @ORM\Entity
* @ORM\HasLifecycleCallbacks()
*/
class Users
{
/**
* @var string
*
* @ORM\Column(name="username", type="string", length=255, nullable=false)
*/
private $username;
/**
* @var string
*
* @ORM\Column(name="firstname", type="string", length=255, nullable=false)
*/
private $firstname;
/**
* @var string
*
* @ORM\Column(name="lastname", type="string", length=255, nullable=false)
*/
private $lastname;
/**
* @var string
*
* @ORM\Column(name="email", type="string", length=255, nullable=false)
*/
private $email;
/**
* @var string
*
* @ORM\Column(name="password", type="string", length=32, nullable=false)
*/
private $password;
/**
* @var boolean
*
* @ORM\Column(name="active", type="boolean", nullable=false)
*/
private $active;
/**
* @var \DateTime
*
* @ORM\Column(name="created", type="datetime", nullable=false)
*/
private $created;
/**
* @var \DateTime
*
* @ORM\Column(name="modified", type="datetime", nullable=false)
*/
private $modified;
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* Set username
*
* @param string $username
* @return Users
*/
public function setUsername($username)
{
$this->username = $username;
return $this;
}
/**
* Get username
*
* @return string 
*/
public function getUsername()
{
return $this->username;
}
/**
* Set firstname
*
* @param string $firstname
* @return Users
*/
public function setFirstname($firstname)
{
$this->firstname = $firstname;
return $this;
}
/**
* Get firstname
*
* @return string 
*/
public function getFirstname()
{
return $this->firstname;
}
/**
* Set lastname
*
* @param string $lastname
* @return Users
*/
public function setLastname($lastname)
{
$this->lastname = $lastname;
return $this;
}
/**
* Get lastname
*
* @return string 
*/
public function getLastname()
{
return $this->lastname;
}
/**
* Set email
*
* @param string $email
* @return Users
*/
public function setEmail($email)
{
$this->email = $email;
return $this;
}
/**
* Get email
*
* @return string 
*/
public function getEmail()
{
return $this->email;
}
/**
* Set password
*
* @param string $password
* @return Users
*/
public function setPassword($password)
{
$this->password = $password;
return $this;
}
/**
* Get password
*
* @return string 
*/
public function getPassword()
{
return $this->password;
}
/**
* Set active
*
* @ORM\PrePersist
* @param boolean $active
* @return Users
*/
public function setActive($active)
{
$this->active = $active;
return $this;
}
/**
* Get active
*
* @return boolean 
*/
public function getActive()
{
return $this->active;
}
/**
* Set created
*
* @param \DateTime $created
* @return Users
*/
public function setCreated()
{
$this->created = $created;
return $this;        
}
/**
* Get created
*
* @return \DateTime 
*/
public function getCreated()
{
return $this->created;
}
/**
* Set modified
*
* @param \DateTime $modified
* @return Users
*/
public function setModified()
{
$this->modified = $modified;
return $this;
}
/**
* Get modified
*
* @return \DateTime 
*/
public function getModified()
{
return $this->modified;
}
/**
* Get id
*
* @return integer 
*/
public function getId()
{
return $this->id;
}
/**
* @ORM\PrePersist
* @ORM\PreUpdate
*/
public function prePersist(){
$this->active = 0;
$this->created = date('Y-m-d H:i:s');
$this->modified = date('Y-m-d H:i:s');
}
}

Voici mon code de Form/UsersType.php

<?php
namespace Acme\DemoBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class UsersType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('username','text', array('required' => true))
->add('firstname','text', array('required' => true))
->add('lastname','text', array('required' => true))
->add('email', 'email', array('label' => 'E-Mail'))
->add('password', 'password', array('label' => 'Password'))
->add('password_confirmation', 'password', array('mapped' => false)) //Added virtual field on form
/*                
->add('active','hidden',array('data' => ''))
->add('created','hidden',array('data' => ''))
->add('modified','hidden',array('data' => ''))
* 
*/
;        
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Acme\DemoBundle\Entity\Users'
));
}
public function getName()
{
return 'acme_demobundle_userstype';
}
}

J'ai commenté ces trois champs actif, créée et modifiée pour ne pas afficher dans le formulaire.

Mais j'obtiens l'erreur:

An exception occurred while executing 'INSERT INTO users (username, firstname, lastname, email, password, active, created, modified) VALUES (?, ?, ?, ?, ?, ?, ?, ?)' with params ["neeraj", "neeraj", "kumar", "[email protected]", "p@ssw0rd", null, null, null]:

Ce que je suis absent de l'Entité?

Trace De La Pile

Stack Trace (Plain Text)  -
[1] Doctrine\DBAL\DBALException: An exception occurred while executing 'INSERT INTO users (username, firstname, lastname, email, password, active, created, modified) VALUES (?, ?, ?, ?, ?, ?, ?, ?)' with params ["neeraj", "neeraj", "kumar", "[email protected]", "p@ssw0rd", null, null, null]:
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'active' cannot be null
at n/a
in C:\wamp\www\Symfony\vendor\doctrine\dbal\lib\Doctrine\DBAL\DBALException.php line 47
at Doctrine\DBAL\DBALException::driverExceptionDuringQuery(object(PDOException), 'INSERT INTO users (username, firstname, lastname, email, password, active, created, modified) VALUES (?, ?, ?, ?, ?, ?, ?, ?)', array('neeraj', 'neeraj', 'kumar', '[email protected]', 'p@ssw0rd', null, null, null))
in C:\wamp\www\Symfony\vendor\doctrine\dbal\lib\Doctrine\DBAL\Statement.php line 140
at Doctrine\DBAL\Statement->execute()
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\Persisters\BasicEntityPersister.php line 277
at Doctrine\ORM\Persisters\BasicEntityPersister->executeInserts()
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php line 929
at Doctrine\ORM\UnitOfWork->executeInserts(object(ClassMetadata))
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php line 318
at Doctrine\ORM\UnitOfWork->commit(null)
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\EntityManager.php line 355
at Doctrine\ORM\EntityManager->flush()
in C:\wamp\www\Symfony\src\Acme\DemoBundle\Controller\UsersController.php line 55
at Acme\DemoBundle\Controller\UsersController->createAction(object(Request))
in  line 
at call_user_func_array(array(object(UsersController), 'createAction'), array(object(Request)))
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2774
at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), '1')
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2748
at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), '1', true)
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2878
at Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel->handle(object(Request), '1', true)
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2179
at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
in C:\wamp\www\Symfony\web\app_dev.php line 28
[2] PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'active' cannot be null
at n/a
in C:\wamp\www\Symfony\vendor\doctrine\dbal\lib\Doctrine\DBAL\Statement.php line 138
at PDOStatement->execute(null)
in C:\wamp\www\Symfony\vendor\doctrine\dbal\lib\Doctrine\DBAL\Statement.php line 138
at Doctrine\DBAL\Statement->execute()
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\Persisters\BasicEntityPersister.php line 277
at Doctrine\ORM\Persisters\BasicEntityPersister->executeInserts()
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php line 929
at Doctrine\ORM\UnitOfWork->executeInserts(object(ClassMetadata))
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php line 318
at Doctrine\ORM\UnitOfWork->commit(null)
in C:\wamp\www\Symfony\vendor\doctrine\orm\lib\Doctrine\ORM\EntityManager.php line 355
at Doctrine\ORM\EntityManager->flush()
in C:\wamp\www\Symfony\src\Acme\DemoBundle\Controller\UsersController.php line 55
at Acme\DemoBundle\Controller\UsersController->createAction(object(Request))
in  line 
at call_user_func_array(array(object(UsersController), 'createAction'), array(object(Request)))
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2774
at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), '1')
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2748
at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), '1', true)
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2878
at Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel->handle(object(Request), '1', true)
in C:\wamp\www\Symfony\app\bootstrap.php.cache line 2179
at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
in C:\wamp\www\Symfony\web\app_dev.php line 28

source d'informationauteur neeraj