How to get user.id from jwt token in Node.js?

Question

In my User controller, I create a token in which I save this user's id when he login to my application.

exports.findOne = (req, res) => {
  User.findOne({
    where: {
      login: req.body.login,
    },
  })
    .then(user => {
      if (user) {
        if (bcrypt.compareSync(req.body.password, user.password)) {
          const token = jwt.sign(
            {
              id: user.id, // this is the id I need.
            },
            env.SECRET_KEY,
            {
              expiresIn: 129600,
            },
          );
          return res.status(200).json({
            message: 'Auth successful',
            token,
          });
        }
       ...
      }
    })
    .catch(err => {
      res.status(400).json({ error: err });
    });
};

Now in another controller I would like to read this id and use it for my purpose. How can I get to it?

       const loginId = '?'; // here I want to give it to id
            Bill.update(
              {
                available_funds: available_funds - amountMoney,
              },
              { where: { id_owner: loginId } },
            ).then(() => {
              res.status(200).send(`ok`);
            });

Possible duplicate of [NodeJs - Retrieve user infor from JWT token?](https://stackoverflow.com/questions/33451298/nodejs-retrieve-user-infor-from-jwt-token) — sadrzadehsina, Dec 22 '18 at 16:49

Sankalpa Timilsina · Answer 1 · 2018-12-22T17:23:58.223

Make a middleware which checks the incoming token before forwarding to your update route. This middleware should be responsible for validating the incoming token which you pass from the client side code after logging in (storing token in cookies is commonly practiced).

Now in your middleware, you can do something similar to this:

app.use(function(req,res,next) {
 JWT.verify(req.cookies['token'], 'YOUR_SECRET', function(err, decodedToken) {
   if(err) { /* handle token err */ }
   else {
    req.userId = decodedToken.id;   // Add to req object
    next();
   }
 });
});

Then, finally in your upcoming controller, you can access the id from the request object:

   const loginId = req.userId;

    Bill.update(
      {
        available_funds: available_funds - amountMoney,
      },
      { where: { id_owner: loginId } },
    ).then(() => {
      res.status(200).send(`ok`);
    });

score 0 · Answer 2 · answered Sep 12 '21 at 13:39

0

You don't need to add extra codes. To access the userId use this:

req.payload.id

answered Sep 12 '21 at 13:39

Behnam Eskandari

1,011
12
27

Si es necesario, el payload saldria undefined. – AllisLove Sep 15 '21 at 18:31

How to get user.id from jwt token in Node.js?

2 Answers2