use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Event\PreUpdateEventArgs;
 use Symfony\Component\Security\Core\User\UserInterface;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 
 use Rapsys\UserBundle\Entity\Civility;
 use Rapsys\UserBundle\Entity\Group;
 /**
  * User
  */
-class User implements UserInterface, \Serializable {
+class User implements UserInterface, PasswordAuthenticatedUserInterface, \Serializable {
        /**
         * @var integer
         */
        /**
         * Constructor
         *
-        * @param string $mail The user mail
+        * @param ?string $mail The user mail
         */
-       public function __construct(string $mail) {
+       public function __construct(?string $mail) {
                //With mail
-               if (!empty($this->mail = $mail)) {
+               if ($mail !== null && !empty($mail)) {
+                       $this->mail = $mail;
                        $this->password = $mail;
+               //Without mail
                } else {
+                       $this->mail = '';
                        $this->password = '';
                }
 
                //Set defaults
-               $this->forename = '';
-               $this->surname = '';
+               $this->forename = null;
+               $this->surname = null;
                $this->active = false;
                $this->disabled = false;
                $this->created = new \DateTime('now');
        /**
         * Set mail
         *
-        * @param string $mail
-        *
+        * @param ?string $mail
         * @return User
         */
-       public function setMail(string $mail): User {
+       public function setMail(?string $mail): User {
                //With mail
-               if (!empty($this->mail = $mail)) {
+               if ($mail !== null && !empty($mail)) {
+                       //Set mail
+                       $this->mail = $mail;
+
                        //Without password
                        if (empty($this->password)) {
                                //Set mail as password
                                $this->password = $mail;
                        }
+               //Without mail
+               } else {
+                       $this->mail = '';
                }
 
                return $this;
        /**
         * Set forename
         *
-        * @param string $forename
+        * @param ?string $forename
         *
         * @return User
         */
-       public function setForename(string $forename): User {
+       public function setForename(?string $forename): User {
                $this->forename = $forename;
 
                return $this;
        /**
         * Get forename
         *
-        * @return string
+        * @return ?string
         */
-       public function getForename(): string {
+       public function getForename(): ?string {
                return $this->forename;
        }
 
        /**
         * Set surname
         *
-        * @param string $surname
+        * @param ?string $surname
         *
         * @return User
         */
-       public function setSurname(string $surname): User {
+       public function setSurname(?string $surname): User {
                $this->surname = $surname;
 
                return $this;
        /**
         * Get surname
         *
-        * @return string
+        * @return ?string
         */
-       public function getSurname(): string {
+       public function getSurname(): ?string {
                return $this->surname;
        }
 
         *
         * @return User
         */
-       public function setPassword(string $password): User {
-               $this->password = $password;
+       public function setPassword(?string $password): User {
+               //With password
+               if ($password !== null && !empty($password)) {
+                       $this->password = $password;
+               //Without password
+               } else {
+                       $this->password = '';
+               }
 
                return $this;
        }
         *
         * @return string
         */
-       public function getPassword(): ?string {
+       public function getPassword(): string {
                return $this->password;
        }
 
                return null;
        }
 
+       /**
+        * {@inheritdoc}
+        */
+       public function getUsername(): string {
+               return $this->mail;
+       }
+
        /**
         * {@inheritdoc}
         */