How to get absolute url for a widget assets in Yii - php

Question

I want to create a Widget in Yii framework that uploads multiple files (I`m using uploadify js/swf plugin). So I defined my widget class something like this:
<?php
class MultipleUploads extends CWidget {
public $assetsPath;
public $assetsDir;
public function init()
{
parent::init();
$this->assetsDir = $this->assetsPath ? $this->assetsPath : dirname(__FILE__) . '/assets/multipleUploads';
$dir = Yii::app()->assetManager->publish($this->assetsDir);
$cs = Yii::app()->clientScript;
$cs->registerCoreScript('jquery');
$cs->registerScriptFile($dir . '/jquery.uploadify.min.js', CClientScript::POS_HEAD);
$cs->registerCssFile($dir . '/uploadify.css', CClientScript::POS_END);
}
public function run() {
$this->render('multipleUploads/index', array('dir' => Yii::app()->getAssetManager()->publish($this->assetsDir)));
}
}
?>
and the view is:
<script type="text/javascript" src="http://localhost/arhitect/assets/be04804/jquery.uploadify.min.js"></script>
<link rel="stylesheet" type="text/css" href="http://localhost/arhitect/assets/be04804/uploadify.css"/>
<h1>Upload files</h1>
<form>
<div id="queue"></div>
<input id="file_upload" name="file_upload" type="file" multiple="true">
</form>
<script type="text/javascript">
$(function() {
$('#file_upload').uploadify({
'formData' : {
'token' : 'xxx',
'action' : 'upload'
},
'auto' : false,
'queueSizeLimit' : 20,
'removeCompleted' : false,
'swf' : 'http://localhost/arhitect/assets/be04804/uploadify.swf',
'uploader' : '<?php echo Yii::app()->createAbsoluteUrl('project/index');?>',
'fileTypeExts' : '*.gif; *.jpg; *.jpeg; *.png',
'fileSizeLimit' : '10MB',
'progressData' : 'all',
'onFallback' : function() {
alert('Flash was not detected.');
},
'onUploadSuccess' : function(file, data, response) {
console.log('response ' + response);
},
'onUploadError' : function(file, errorCode, errorMsg, errorString) {
console.log('The file ' + file.name + ' could not be uploaded: ' + errorString);
},
'onQueueComplete' : function(queueData) {
parent.validate('refresh');
}
});
});
Note the hardcoded paths in the view file (the .js and .css files): if Im using the hardcoded path, the widget is rendered correctly. Is there any way to get the absolute url path to the assets widget folder?
Thanks.