How to return a value from a callback in nodejs?

Question

This is my index.js

app.get('/api/user', auth.authenticate, function(req, res){
    res.send("hi");
});

This is my auth.authenticate function:

exports.authenticate = function(req, res,done) {
 // function checkToken(req,res,next){
    console.log(req.body);
    authToken = req.body["auth_token"]
    consumerKey = req.body["consumer_key"]
    checkAuth(authToken,consumerKey,function response(user){
      done();
    });
}

After authenticating, I want to return "user" back to the app.get in index.js so that I can use it to retrieve more data but I'm somehow not able to understand how to do that.

Is it possible to send user via the done() callback? I tried it but was unsuccessful.

AndyD · Accepted Answer · 2013-06-10 16:02:45Z

1

Yes that's possible as the request object passed around in Express.js is the same. Just add it to the request like this:

checkAuth(authToken,consumerKey,function response(user){
  request.user = user;
  done();
});

and then you can use it in the index.js

app.get('/api/user', auth.authenticate, function(req, res){
    res.send("hi " + req.user);
});

answered Jun 10, 2013 at 16:02

AndyD

5,36637 silver badges33 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Hick Over a year ago

HOLY! Such an easy way to do it.

Collectives™ on Stack Overflow

How to return a value from a callback in nodejs?

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related