Contoh Upload File

public function actionCreate()
    {
        $model=new Registration;

        if(isset($_POST['Registration']))
        {
            $rnd = rand(0,9999999999);
            $model->attributes=$_POST['Registration'];

            $uploadedFile = CUploadedFile::getInstance($model,'scan_ktp');
            $fileName = $rnd.".".$uploadedFile->getExtensionName();

            $model->scan_ktp = $fileName;

            if($model->save()){

                $uploadedFile->saveAs(Yii::app()->basePath.'/../scan/'.$fileName);
                Yii::app()->user->setFlash('success', 'Data anda telah tersimpan pada database aplikasi.');
                $this->refresh();
            }

        }

        $this->render('create',array(
            'model'=>$model,
        ));
    }