Как вбивать дату и время в разных инпутах, но сохранять все в одной поле таблицы?

2 дата контроллера

он же обращается через $form->field($model, 'srok')

public $srok_date;
public $srok_time;

<div class="col-xs-10">
                    <?= $form->field($test1, 'time_input')->widget(DateControl::className(),
                    [
                        'convertFormat' => true,
                        'type'=>DateControl::FORMAT_DATE,


                        'widgetOptions' => [
                                'pluginOptions' => [
                                        'autoclose' => true,
                                    ],
                            'options' => ['placeholder' => 'Cрок']
                        ],
                    ])->label(false);?>
            </div>
        <div class="col-xs-10">
            <?=  $form->field($test2, 'time_input')->widget(DateControl::classname(), [
                'type'=>DateControl::FORMAT_TIME,
                'ajaxConversion'=>false,
                'widgetOptions' => [
                    'pluginOptions' => [
                        'autoclose' => true
                    ],
                    'options' => ['placeholder' => 'Время']
                ]
            ])->label(false);?>
        </div>
        <?php $datetime = $test1->data_input.' '.$test2->time_input ?>
        <?php ActiveForm::begin(); ?>

public $srok_date;
public $srok_time;

$form->field($model, 'srok_date')->widget(DateControl::className(),[
'type'=>DateControl::FORMAT_DATE,
]);
$form->field($model, 'srok_time')->widget(DateControl::className(),[
'type'=>DateControl::FORMAT_TIME,
]);

public function beforeSave($insert)
    {
        if (parent::beforeSave($insert)) {
            $this->srok = $this->srok_date . ' ' . $this->srok_time;
            return true;
        } else {
            return false;
        }
    }

if ($model->load(Yii::$app->request->post()) && $client->load(Yii::$app->request->post())) {
            $model->srok = Yii::$app->request->post('Zakaz')['srok_date'].' '.Yii::$app->request->post('Zakaz')['srok_time'];

public function actionCreate()
    {
        $model = new Zakaz();
        $client = new Client();
        $client->scenario = Client::SCENARIO_CREATE;
        $telegram = new Telegram();
        $tag = new ZakazTag();
        $financy = new Financy();
        $notification = new Notification();

        if ($model->load(Yii::$app->request->post()) && $client->load(Yii::$app->request->post())) {
            if(Yii::$app->request->post('Zakaz')['srok_time'] == null){
                $model->srok = Yii::$app->request->post('Zakaz')['srok_date'].' '.date('H-i-s');;
            }else{
                $model->srok = Yii::$app->request->post('Zakaz')['srok_date'].' '.Yii::$app->request->post('Zakaz')['srok_time'];
            }
            if (Yii::$app->request->get('id')){
                $model->id_client = ArrayHelper::getValue(Yii::$app->request->get(), 'id');
            } else {
                $model->id_client = ArrayHelper::getValue(Yii::$app->request->post('Client'), 'id');
            }
            $model->id_shop = $model->id_sotrud;
            $model->file = UploadedFile::getInstance($model, 'file');
            if ($model->file) {
                $model->upload('create');
            }
            $model->changedUnread();
            if ($model->validate() && $client->validate()){
                if (!$model->save()) {
                    print_r($model->getErrors());
                } else {
                    $arr = ArrayHelper::map($model->tags, 'id', 'id');
                    $post = Yii::$app->request->post('Zakaz')['tags_array'];
                    if ($post){
                        $tag->getZakazForm($post, $arr, $model->id_zakaz);
                    }
                    $financy->saveSum($model->fact_oplata, $model->id_zakaz, $model->oplata);
                    Yii::$app->session->addFlash('update', 'Успешно создан заказ '.$model->id_zakaz);
                    if (Yii::$app->user->id != User::USER_ADMIN ){
                        $notification->getByIdNotification(2, $model->id_zakaz);
                        $notification->getSaveNotification();
                    }

                    if($model->status == Zakaz::STATUS_DISAIN){
                        $notification->getByIdNotification(3, $model->id_zakaz);
                        $notification->getSaveNotification();
                       /* $telegram->message(User::USER_DISAYNER, 'Назначен заказ '.$model->prefics.' '.$model->description);*/
                    }
                    if ($model->status == Zakaz::STATUS_MASTER ){
                        $notification->getByIdNotification(4, $model->id_zakaz);
                        $notification->getSaveNotification();
                        /* $telegram->message(User::USER_MASTER, 'Назначен заказ '.$model->prefics.' '.$model->description);*/
                    }

                    /*$telegram->message(User::USER_ADMIN, 'Создан заказ '.$model->prefics.' '.$model->description);*/
                }

                if (Yii::$app->user->can('shop')) {
                    return $this->redirect(['shop']);
                } elseif (Yii::$app->user->can('admin')) {
                    return $this->redirect(['admin']);
                }
            }
        }

        return $this->render('create', [
            'model' => $model,
            'client' => $client,
        ]);
    }

if(Yii::$app->request->post('Zakaz')['srok_time'] != null ){
                $model->srok =старая дата.' '.Yii::$app->request->post('Zakaz')['srok_time'];
            }