User class with property password_changed_at

User.php

<?php

namespace Hpatoio\UserBundle\Entity;

use FOS\UserBundle\Entity\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="fos_user")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;
    
    /**
     * @var date_time
     *
     * @ORM\Column(name="password_changed_at", type="datetime")
     */
    protected $password_changed_at;
    
    public function __construct()
    {
        parent::__construct();

	$today = new \DateTime();
        $this->setPasswordChangedAt($today);
        
    }
    
   public function setPlainPassword($password)
    {
        $today = new \DateTime();
        $this->setPasswordChangedAt($today);
        parent::setPlainPassword($password);
    }
    
    /**
     * @var date_time
     *
     * @ORM\Column(name="password_changed_at", type="datetime")
     */
    protected $password_changed_at;

    /**
     * Set password_changed_at
     *
     * @param \DateTime $passwordChangedAt
     * @return User
     */
    public function setPasswordChangedAt($passwordChangedAt)
    {
        $this->password_changed_at = $passwordChangedAt;
    
        return $this;
    }

    /**
     * Get password_changed_at
     *
     * @return \DateTime 
     */
    public function getPasswordChangedAt()
    {
        return $this->password_changed_at;
    }

}