Yii upload image or file to server

Model Image:

<?php
class Image extends CActiveRecord
{
    public $uploaded_owner_img;
  
    public static function model($className=__CLASS__)
    {
        return parent::model($className);
    }
    
    public function tableName()
    {
        return 'table_name';
    }
    
    public function rules()
    {
        return array(
            array('owner_img', 'file', 'allowEmpty'=>true,'types'=>'jpg','maxSize'=>1024*1024*1, 'tooLarge'=>'Image must be less than�1MB'),
            array('owner_name, owner_img', 'required'),
            array('owner_name', 'unique'),
            array('owner_name', 'length', 'max'=>20, 'encoding'=>'utf-8'),
            array('owner_name', 'safe', 'on'=>'search'),
        );
    }
    
    public function attributeLabels()
    {
        return array(
            'owner_img' => 'Select image.',
            'owner_name' => 'Name'
        );
    }
    
    protected function beforeSave() {
        if (parent::beforeSave ()) {
            if ($this->isNewRecord) {
                $this->created = date('Ymd');
            }
            return true;
        }else {
            return false;
        }
    }
}

Controller ImageController.php

<?php
class ImageController extends Controller
{
    public function actions()
    {
        return array(
            // captcha action renders the CAPTCHA image displayed on the contact page
            'captcha'=>array(
                'class'=>'CCaptchaAction',
                'backColor'=>0xFFFFFF,
            ),
            // page action renders "static" pages stored under 'protected/views/site/pages'
            // They can be accessed via: index.php?r=site/page&view=FileName
            'page'=>array(
                'class'=>'CViewAction',
            )
        );
    }
        
    public function actionCreate()
    {
        $model=new Image;
        //AJAX validation is needed
        $this->performAjaxValidation($model);
        if(isset($_POST['Image'])) {
            $model->attributes=$_POST['Image'];
            if (@!empty($_FILES['Image']['name']['owner_img'])){
                $model->owner_img = time().".jpg";
                if ($model->validate(array('owner_img'))){
                    $model->uploaded_owner_img = CUploadedFile::getInstance($model, 'owner_img');
                    $model->uploaded_owner_img->saveAs(Yii::app()->basePath.'/'.$model->owner_img);
                    
                    if($model->save()){
                        echo "Model saved"; die(0);
                    }
                }
            }
        }

        $this->render('create',array(
            'model'=>$model,
        ));
    }
    
    protected function performAjaxValidation($model)
    {
        if(isset($_POST['ajax']) && $_POST['ajax']==='map-form')
        {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }
}

View file

<?php
$this->breadcrumbs=array(
    "image/create"
);

$this->menu=array(
);
?>

<h1>Image Upload</h1>

<div class="form">

<?php 
$form=$this->beginWidget('CActiveForm', array(
    'id'=>'map-form',
    'enableAjaxValidation'=>false,
    'htmlOptions' =>array('enctype'=>"multipart/form-data" ),
    'enableAjaxValidation' => false,
    'enableClientValidation'=>true,
    'clientOptions'=>array('validateOnSubmit'=>true)
)); 
?>

<p class="note">Mark <span class="required">*</span> are required.</p>

<?php echo $form->errorSummary($model); ?>

<div class="row">
    <?php echo $form->labelEx($model,'owner_name'); ?>
    <?php echo $form->textField($model,'owner_name',array('size'=>32,'maxlength'=>20)); ?>
    <?php echo $form->error($model,'owner_name'); ?>
</div>

<div class="row">
    <?php echo $form->labelEx($model,'owner_img'); ?>
    <?php echo $form->fileField($model,'owner_img'); ?>
    <?php echo $form->error($model,'owner_img'); ?>
</div>

<div class="row buttons">
    <?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>

<?php $this->endWidget(); ?>
</div>