$file=CUploadedFile::getInstance($model,'file'); //prende il riferimento al file
		if($file != null) {
		//	$dir2 = Yii::getPathOfAlias('application.uploads'); //il path alias
			$dir = Yii::app()->getAssetManager()->publish(Yii::getPathOfAlias('application.uploads'));
			echo "dir".$dir;
			echo "percorso".$dir2;
			$file->saveAs($dir.'/'.$file->getName());
			$this->foto=$file->getName();
		}