Method options

backend/web/base.py:25–27

(self)

            self.set_header("Access-Control-Expose-Headers", "Cache-Control, Content-Language, Content-Type, Expires, Last-Modified, Pragma")
    # 同时定义一个option方法
    def options(self):
        self.set_status(204)
        self.finish()

    @property
    def db(self):