Empty User Object from Symfony after login -

i created login page symfony , twig. now, i'm trying retrieve username after login. seems, user object return securitycontroller empty , twig has rendering problem. need userobject?

security.yml

security:      encoders:         userbundle\entity\user:             algorithm: bcrypt      providers:         in_memory:             memory: ~          user_db_provider:             entity:                 class: userbundle:user                 property: username      firewalls:         dev:             pattern: ^/(_(profiler|wdt)|css|images|js)/             security: false          main:             anonymous: ~              http_basic: ~             provider: user_db_provider              form_login:                 login_path: /login                 check_path: /login_check              logout:                 path: /logout                 target: / 

securitycontroller

class securitycontroller extends controller{

    /**      * @route("/login", name="login_form")      */     public function loginaction(){          $authenticationutils = $this->get('security.authentication_utils');         $error = $authenticationutils->getlastauthenticationerror();          $user = $this->getuser();           return $this->render(':security:login.html.twig',                 array(                         'user' => $user,                         'error'=> $error,                 )         );     }  /**  * @route("/login_check", name="login_check")  */ public function logincheckaction() {}  /**  * @route ("/logout", name="logout")  */ public function logoutaction(){}} 

user (serialize, getter/setter methods implemented)

/**  * @table("users")  * @entity  */ class user implements userinterface, \serializable {          /**          * @column(name="id", type="integer")          * @id          * @generatedvalue(strategy="auto")          */         private $id;          /**          * @column(length=25)          */         private $username;          /**          * @column(length=64)          */         private $password;          /**          * @var array          * @column(name="roles", type="json_array")          */         private $roles = array(); 

twig-template

    {% if is_granted('is_authenticated_remembered') %}     <div class="form-group">         {{ user.username }}         <a href="{{ path('logout') }}">logout</a>     </div> {% else %} <form class="navbar-form navbar-left" action="{{ path('login_check') }}" method="post">     <div class="form-group">         <input type="text" class="form-control" name="_username" placeholder="username"/>         <input type="password" class="form-control" name="_password" placeholder="password"/>         <button type="submit" class="btn btn-default">log in</button>     </div> </form> {% endif %} {% if error defined %} <p class="navbar-text navbar-right">{{ error.messagekey|trans(error.messagedata, 'security')}}</p> {% endif %} 

symfony have global template variables check this. use:

{{ app.user.username }}