Mi7teR

/**
     * @Assert\Regex("/[^ \w]+/u")
     * @Assert\NotBlank()
     * @ORM\Column(name="name", type="string", length=255)
     */

'authManager' => [
            'class' => 'yii\rbac\DbManager',
            'cacheKey' => 'rbac',
            'cache' => 'cache',
            'defaultRoles' => ['guest'],
        ],

public function actionCreate()
    {
        $model = new Post();
        $model->id_user = Yii::$app->user->identity->id;
        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
        }
    }

$this->render('index', array(
            'dataProvider' => $dataProvider,
            'model' => $model,
            'phone' => new Phone,
        ));