Updating a form doesn't display the value

Why when I’m updating a form it doesn’t display the value it displays only ‘(not set)’

In my form whenever I click the update button it automatically gets the current server time but when I update it it doesn’t display on the view


 public function actionUpdate($id)


        $model = $this->findModel($id);

        if ($model->load(Yii::$app->request->post()) && $model->save()) {

            return $this->redirect(['view', 'id' => $model->id]);

        } else {

            $model->time_end = date("d-m-Y H:i:s");

            return $this->render('update', [

                'model' => $model,





 <?= $form->field($model, 'time_end')->widget(DateTimePicker::className(),


                                            'value' => date('d-m-Y H:i:s'),

                                            'disabled' => true



I also used it on my actionCreate and it works fine.

Because input is disabled?