手机号登录生成 token 的问题 [ 2.0 版本 ]

public function actionLogin() {
    $credentials = Yii::$app->request->post();

    $phone = $credentials['phone'];
    $code  = $credentials['code'];

    /* 检查验证码 */
    $isCodeValid = $this->checkCode($phone, $code);
    if ($isCodeValid) {
        $user = $this->findUserByPhone($phone);
        if ($user && Yii::$app->user->login($user)) {
            $token = $this->generateToken($user);
            CacheHelper::set($token, $user->id);
            return $this->send(200, ['token'=>$token,'message'=>'登录成功']);
        }
        return $this->send(404, ['msg'=>'账号未注册']);
    }
    return $this->send(400, ['message'=>'验证码错误']);
}

为啥我登录成功生成token了，请求另外的接口发现 Yii::$app->user->isGuest 还是 true，我这个登录方法有什么问题吗，还是缺少了哪些配置