Find by any of tags for taggable Yii extension

taggable_or.php

/**
 * Get criteria to limit query to match any of tags specified
 * @access private
 * @param array $tags
 * @return CDbCriteria
 */
protected function getFindByAnyTagsCriteria($tags) {
	$criteria = new CDbCriteria();

	$pk = $this->getOwner()->tableSchema->primaryKey;

	if(!empty($tags)){
		$conn = $this->getConnection();
		foreach($tags as &$tag) {
			$tag = $conn->quoteValue($tag);
		}
		unset($tag);
		$tags = implode(', ', $tags);

		$criteria->select = 't.*';
		$criteria->join .=
			"JOIN {$this->getTagBindingTableName()} bt ON t.{$pk} = bt.{$this->getModelTableFkName()}
			JOIN {$this->tagTable} tag ON tag.{$this->tagTablePk} = bt.{$this->tagBindingTableTagId} AND tag.`{$this->tagTableName}` IN ($tags)";
		}
	}

	if($this->getScopeCriteria()){
		$criteria->mergeWith($this->getScopeCriteria());
	}

	return $criteria;
}

/**
 * Limit current AR query to have any of tags specified.
 * @param string|array $tags
 * @return CActiveRecord
 */
public function taggedWithAnyOf($tags) {
	$tags = $this->toTagsArray($tags);

	if(!empty($tags)){
		$criteria = $this->getFindByAnyTagsCriteria($tags);
		$this->getOwner()->getDbCriteria()->mergeWith($criteria);
	}

	return $this->getOwner();
}