Laravel：如何增加login（）功能？

这可能很简单，但我不明白。我希望用户登录后，程序可以在日志文件中写入内容。因此，我坚信可以通过扩展特性来发挥作用。

LoginController uses AuthenticatesUsers trait and the login() is there, so the first thing I did was to add my own login() in the LoginController, something like:

public function login(Request $request) {
    $ret = parent::login($request);

    // Do the writting to the log

    return $ret;
}

This didn't work... so then I turned to try a postLogin() function, but didn't work either, it simply didn't execute. This function is on the LoginController

public function postLogin() {
    // Do writting to the log
}

哪种方法正确？