Permission::beforeSave PHP Method

    public function beforeSave($options = array())
    {
        if (isset($this->data['Permission'])) {
            $data = $this->data['Permission'];
        } else {
            $data = $this->data;
        }
        if (isset($data['url'])) {
            if (preg_match('/^[^\\/]/is', $data['url'])) {
                $data['url'] = '/' . $data['url'];
            }
        }
        $this->data['Permission'] = $data;
        return true;
    }