javascript - 错误 : req#login requires a callback function Passport. js

Question

我正在实现 Passport 重置，但 req.login 似乎不起作用。

这是我的路线

// Token URL :post
router.post('/users/reset/:token', (req, res, next) => {
  if(req.body.password === req.body['password-confirm']) {
    req.flash('error', 'Passwords do not match!');
    res.redirect('/users/forgot');
  }

  User.findOne({
    resetPasswordToken: req.params.token,
    resetPasswordExpires: { $gt: Date.now() }
  }, function(err, user) {
    if(!user) {
      req.flash('error', ' Password reset is invalid or has expired');
      res.redirect(302, '/login');
    }

    const setPassword = promisify(user.setPassword, user);
    setPassword(req.body.password);
    user.resetPasswordToken = undefined;
    user.resetPasswordExpires = undefined;
    const updatedUser = user.save();

    req.login(updatedUser);

    req.flash('success_msg', 'Your password has been reset successfully! You are now logged in!');
    return res.redirect('/dashboard' + req.user);
  });
});

这是日志

Thu Jan 25 2018 22:45:10 GMT+0000 (GMT): GET /users/reset/3eab13651335967925c180427bfb2ccc956187be
Mongoose: users.findOne({ resetPasswordExpires: { '$gt': new Date("Thu, 25 Jan 2018 22:45:10 GMT") }, resetPasswordToken: '3eab13651335967925c180427bfb2ccc956187be' }, { fields: {} })
Thu Jan 25 2018 22:45:10 GMT+0000 (GMT): GET /favicon.ico
Thu Jan 25 2018 22:45:20 GMT+0000 (GMT): POST /users/reset/3eab13651335967925c180427bfb2ccc956187be
Mongoose: users.findOne({ resetPasswordExpires: { '$gt': new Date("Thu, 25 Jan 2018 22:45:20 GMT") }, resetPasswordToken: '3eab13651335967925c180427bfb2ccc956187be' }, { fields: {} })
events.js:136

      throw er; // Unhandled 'error' event
      ^

Error: req#login requires a callback function
    at IncomingMessage.req.login.req.logIn (/Users/benbagley/Code/poetry-out-loud/node_modules/passport/lib/http/request.js:47:44)
    at /Users/benbagley/Code/poetry-out-loud/routes/users.js:326:9
    at model.Query.<anonymous> (/Users/benbagley/Code/poetry-out-loud/node_modules/mongoose/lib/model.js:4056:16)
    at /Users/benbagley/Code/poetry-out-loud/node_modules/kareem/index.js:273:21
    at /Users/benbagley/Code/poetry-out-loud/node_modules/kareem/index.js:131:16
    at process._tickCallback (internal/process/next_tick.js:150:11)
[nodemon] app crashed - waiting for file changes before starting...

Answer 1

在 mongoose 中，Model.save() 是异步的(因为到达数据库和返回数据库需要时间)。当您执行以下操作时...

const updatedUser = user.save();

req.login(updatedUser);

您没有将 updatedUser 传递给 req.login - 您传递的是 Unresolved Promise。这就是登录功能失败的原因。 req.login也是异步的!

在使用它们的结果之前，您需要等待函数完成。您可以通过三种方式做到这一点:

1) 回调函数 - 这是您作为第二个参数传递给 User.findOne 的函数。

user.save((saveError, updatedUser) => {
    // Check if saveError is present here and handle appropriately
    req.login(updatedUser, loginError => {
        req.flash('success_msg', 'Your password has been reset successfully! You are now logged in!');
        res.redirect('/dashboard' + req.user);
    })
});

2) 在返回的 promise 上调用 .then，并传递一个函数给 then，当 promise resolve 时执行

 user.save()
     .then(updatedUser => req.login(updatedUser))
     .then(() => {
         req.flash('success_msg', 'Your password has been reset successfully! You are now logged in!');
         res.redirect('/dashboard' + req.user);
      })
      .catch(err => /* handle error */);

3) 使用 async/await 并等待 promise 的解决。整个函数需要标记为异步，然后我们可以await任何返回 promises 的函数:

router.post('/users/reset/:token', async (req, res, next) => {
  try {
      if(req.body.password === req.body['password-confirm']) {
          req.flash('error', 'Passwords do not match!');
          res.redirect('/users/forgot');
      }

      const user = await User.findOne({
          resetPasswordToken: req.params.token,
          resetPasswordExpires: { $gt: Date.now() }
      });

      if(!user) {
          req.flash('error', ' Password reset is invalid or has expired');
          res.redirect(302, '/login');
      }

      const setPassword = promisify(user.setPassword, user);
      await setPassword(req.body.password);

      user.resetPasswordToken = undefined;
      user.resetPasswordExpires = undefined;

      const updatedUser = await user.save();

      await req.login(updatedUser);

      req.flash('success_msg', 'Your password has been reset successfully! You are now logged in!');
      return res.redirect('/dashboard' + req.user);
  } catch (err) {
    // handle error
  }
});