Laravel 重写用户登录

class AuthController extends Controller
{
    //
    use ThrottlesLogins, AuthenticatesAndRegistersUsers;

    protected $redirectTo = 'admin/index';
    protected $loginView = 'admin/login';
    protected $guard = 'admin';
    protected $redirectAfterLogout = 'admin/login';
    protected $maxLoginAttempts = 5; //每分钟最大尝试登录次数
    protected $lockoutTime = 600;  //登录锁定时间

    function __construct()
    {
        $this->middleware('guest:admin', ['except' => 'logout']);
    }

    protected function validator(array $data)
    {

        return Validator::make($data, [
            'username' => 'required|max:255',
            'email' => 'required|email|max:255|unique:admin_users',
            'password' => 'required|confirmed|min:6',
        ]);

    }

    /**
     * @param Request $request
     */
    protected function validateLogin(Request $request)
    {
        $this->validate($request,[
            $this->loginUsername() => 'required',
            'password' => 'required',
            'captcha' => 'required|captcha'
        ], [
            'email.required' => '邮箱必须',
            'password.required' => '密码必须',
            'captcha.captcha' => '验证码错误',
            'captcha.required' => '验证码必须',
        ]);
    }

    /**
     * 重写登录
     * @param Request $request
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response
     */
    public function login(Request $request)
    {
        $this->validateLogin($request);

        // If the class is using the ThrottlesLogins trait, we can automatically throttle
        // the login attempts for this application. We'll key this by the username and
        // the IP address of the client making these requests into this application.
        $throttles = $this->isUsingThrottlesLoginsTrait();
        //dd($this->hasTooManyLoginAttempts($request));
        if ($throttles && $lockedOut = $this->hasTooManyLoginAttempts($request)) {
            $this->fireLockoutEvent($request);

            //日志记录
            $this->login_logs(['email'=>$request->input('email'), 'login_ip'=>$request->ip(), 'login_result'=>0, 'comments'=>'限制登录10分钟']);

            return $this->sendLockoutResponse($request);
        }

        $credentials = $this->getCredentials($request);

        if (Auth::guard($this->getGuard())->attempt($credentials, $request->has('remember'))) {
            //日志记录
            $this->login_logs(['email'=>$request->input('email'), 'login_ip'=>$request->ip(), 'login_result'=>1, 'comments'=>'登录成功']);

            return $this->handleUserWasAuthenticated($request, $throttles);
        }

        // If the login attempt was unsuccessful we will increment the number of attempts
        // to login and redirect the user back to the login form. Of course, when this
        // user surpasses their maximum number of attempts they will get locked out.
        if ($throttles && ! $lockedOut) {
            //日志记录
            $this->login_logs(['email'=>$request->input('email'), 'login_ip'=>$request->ip(), 'login_result'=>0, 'comments'=>'登录失败']);

            $this->incrementLoginAttempts($request);
        }

        return $this->sendFailedLoginResponse($request);
    }

    /**
     * 登录记录
     * @param $data
     */
    private function login_logs ($data)
    {
        LoginLog::create($data);
    }
}