Yii delete uploaded file when delete record from database

Yii_delete_file_when_delete_record.php

<?php
	// Add to current model
	protected function beforeDelete()
	{
	    if (parent::beforeDelete()) {
	    	// file_field_name - db field that contains name of uploaded file
	        if ($this-><file_field_name>)
	        	// webroot.images - path to images forlder (such as Yii::app()->baseurl."/images/")
	        	// if using another forder name (for example: /upload/) - Yii::getPathOfAlias('webroot.upload')
	            @unlink(Yii::getPathOfAlias('webroot.images') . "DIRECTOTY_SEPARATOR" . $this-><file_field_name>);
	        return true;
	    } return false;
	}
?>