    public function beforeSave() {
        if(strpos($this->tag,self::DELIM) !== false) {
            $this->tag = strtr($this->tag,array(self::DELIM => ''));
        }
        return true;
    }
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.