Converting JSON to Array with Cloud Functions-CodePudding

When I use this function I get the following result from my realtime database. It looks like a json object. How can I turn that to an array or retrieve the string userName? snapshot.userName is not working.

const functions = require('firebase-functions');
const admin = require('firebase-admin');

admin.initializeApp();

   exports.Push = functions.database.ref('/placeID/{pushId}/')
   .onCreate((snapshot, context) => {
 
      console.log(snapshot)    
   })

CodePudding user response：

snapshot is a reference to a Firestore document. In order to get the data contained in a document doc you need to call doc.data(). So in your case it would be doc.data().userName.

See the documentation for some examples.

CodePudding user response：

Properties of objects in Javascript are case sensitive. Try this:

console.log(snapshot.userName);

New suggestion after receiving clarification:

console.log(snapshot.val());

See following link for more info about the snapshot object and available methods/properties: https://firebase.google.com/docs/reference/functions/providers_database.datasnapshot