Почему не обновляются данные таблицы в Yii2?

<?php
use yii\helpers\Html;
use yii\bootstrap\ActiveForm;
$baseUrl = Yii::$app->request->baseUrl; 
?>
<div>
<? 
$username = $user -> username;
$mail = $user -> email;
$phone = $user -> phone;
$ava = $user -> ava;
$status = $user -> status;
$pass = $user -> password;
$id = $user -> id;
?>
<?php $form = ActiveForm::begin([ 'method' => 'POST', 'options' => ['enctype' => 'multipart/form-data']]) ?>
					<?= $form->field($EditUserAdmin, 'username')->textInput(['value' => $username]) ?>
					<?= $form->field($EditUserAdmin, 'email')->textInput(['value' => $mail]) ?>
					<?= $form->field($EditUserAdmin, 'phone')->textInput(['value' => $phone]) ?>
					<?= $form->field($EditUserAdmin, 'password') ?>
					<?= $form->field($EditUserAdmin, 'status') ?>
					<?= $form->field($EditUserAdmin, 'id')->textInput(['value' => $id]) ?>
					<?= $form->field($EditUserAdmin, 'ava')->fileinput() ?>
					<img src='<?='../../web/'.$ava?>'> <br>
					<?= Html::submitButton('Сохранить', ['class' => 'btn btn-success']) ?>
					<?php ActiveForm::end() ?>

</div>

public function actionUsers()
    {

								if(Yii::$app->request->get()){
									$EditUserAdmin = new EditUserAdmin();
									$user = $_GET['user'];
									$user_result = User::find()->where(['username' => $user]) -> one();					
									return $this->render('Edituseradmin',[
									'EditUserAdmin' => $EditUserAdmin,
									'user' => $user_result ]);
								}
 								if(Yii::$app->request->post()){	    
									$id = $_POST['EditUserAdmin']['id'];			
									$user = User::find()->where(['id' => $id]) -> one();
									
									    $user->username=$_POST['EditUserAdmin']['username'];
										$user->email=$_POST['EditUserAdmin']['email'];
										$user->phone=$_POST['EditUserAdmin']['phone'];
										$user->password=md5($_POST['EditUserAdmin']['password']);
										$user->ava=$_POST['EditUserAdmin']['ava'];
										$user->status=$_POST['EditUserAdmin']['status'];
										$user->update();
																		
										return Yii::$app->response->redirect(Url::to('index'));
								} 
		$users = user::find()->all();	
		return $this->render('users',[
            'users' => $users,
        ]);  
    }