CODEWITHSUNDEEP
javascriptnode.jsfirebase
Praveen Cool
Praveen Cool

Reputation: 261

Getting empty data from Firebase

I have a firebase tree like this :

enter image description here

I want to retrieve this data into a JSON object

I tried the following code but its showing empty on my browser:

    const http = require('http');
const firebase = require('firebase');

 var config = {
    apiKey: "AIzjhjdfkjkfkjkjkfPSFNo3Eb-e2E",
    authDomain: "demoapp.firebaseapp.com",
    databaseURL: "https://demoapp-54551.firebaseio.com",
    projectId: "demoapp-79516",
  };


var server = http.createServer((req,res)=>{

    if (!firebase.apps.length) {
    firebase.initializeApp(config);
}
    var db = firebase.database();
    var d = {}
    res.statusCode = 200;
    res.setHeader('Content-Type','text/plain');


    var readRef = db.ref('categories');

    readRef.once('value', snapshot => {     
        var key = snapshot.key;
        d[key] = [];
        d[key].push(snapshot.val());        
    });


    res.end(JSON.stringify(d));    

});


server.listen(8080);

My result is empty object like below:

enter image description here

Please help me how to get Firebase data into a JSON string

Upvotes: 2

Views: 1186

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 599621

It seems you're trying to use the Firebase web/IoT SDK in a Cloud Function: const firebase = require('firebase');. That won't work.

Instead you should use the Firebase Admin SDK, as shown in all the samples: https://firebase.google.com/docs/functions/get-started#import_the_required_modules_and_initialize 

const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase); 
var db = admin.database();

Upvotes: 2

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