Pass data to nodejs server from javascript file - Nodejs

Question

I have been fighting with an (firebase & nodejs) issue and it's 4th part of that problem, How can i pass data after login to server.js

I have tried this But failed to get it working.

Basically i am trying to send user idToken to server to get it verified.

This what i have tried:

const promise = auth.signInWithEmailAndPassword(email, pass).then(function(){
    $('.load-bar').hide();
    firebase.auth().currentUser.getIdToken(/* forceRefresh */ true).then(function(idToken) {
        // Send token to your backend via HTTPS
        console.log(data);
        $http.get('server', {params: {idToken: idToken}})
            .success(
                function(success){
                    console.log('success');
                })
            .error(
                function(error){
                    console.log(error)
                });
    }).catch(function(error) {
      // Handle error
    });
});

But it's doing nothing no error not success and on server.js

app.get('/server', function(req,res, next){
   console.log(req.query.idToken);
});

But still nothing. What am i doing wrong?

Is the `console.log(req.query.idToken);` called on the server and does it output something? If not is the `console.log(data)` called on the client? Is there an error reported at `// Handle error`? — t.niese, Jul 21 '17 at 05:23

score 1 · Accepted Answer · answered Jul 21 '17 at 05:16

1

If you don't return Promise from then, the Promise will return undefined. And to resolve a promise with success you need to return Promise.resolve and to terminate with error you need to return Promise.reject. Try this -

const promise = auth.signInWithEmailAndPassword(email, pass).then(function(){
    $('.load-bar').hide();
    return firebase.auth().currentUser.getIdToken(/* forceRefresh */ true).then(function(idToken) {
        // Send token to your backend via HTTPS
        console.log(data);
        $http.get('server', {params: {idToken: idToken}})
            .success(
                function(success){
                    return Promise.resolve(success);
                })
            .error(
                function(error){
                    return Promise.reject(error);
                });
    }).catch(function(error) {
      return Promise.reject(error);
    });
});

answered Jul 21 '17 at 05:16

shawon191

1,945
13
28

Error - `promise.reject` is not a function – Noman Ali Jul 21 '17 at 05:34
@NomanAli Make sure you've used `Promise.reject` and not `promise.reject`. – shawon191 Jul 21 '17 at 05:36
with Promise is says in console `ReferenceError: $http is not defined` – Noman Ali Jul 21 '17 at 05:38
1

@NomanAli Make sure you've imported libraries properly. If you're using `angularjs` you may need to inject `$http` service in your controller. – shawon191 Jul 21 '17 at 05:48
Sorry! i am using vanilla JS, not angular. :( – Noman Ali Jul 21 '17 at 05:49
@NomanAli vanilla js does not have a `$http` library. If you want to use vanilla js you need to use `XMLHttpRequest`. – shawon191 Jul 21 '17 at 05:54
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/149773/discussion-between-noman-ali-and-shawon191). – Noman Ali Jul 21 '17 at 06:05

score 0 · Answer 2 · answered Jul 21 '17 at 05:10

0

Your route needs to respond:

app.get('/server', function(req,res, next){
  console.log(req.query.idToken);
  return res.send('success!');
});

answered Jul 21 '17 at 05:10

Ezra Chu

832
4
13

score 0 · Answer 3 · answered Jul 21 '17 at 18:21

The issue is you are not sending your response back to the api call origin. That is why you are not getting success or error results.

Change the code in server as:

app.get('/server', function(req, res, next){
   console.log(req.query.idToken);
   res.send(200);/*Just sends success code*/
   //res.send("Token rcvd");/*Or send some custom message back to call origin*/
});

Pass data to nodejs server from javascript file - Nodejs

3 Answers3