Add a listener to a child inside of a firebase generated key?

Question

Given the layout

+ activity
  + -K5p_pBXog4kb0SVLXxj
    text:\'something\',
    when:111
    + thread
      + -K5paF53zm3cuudP9FUQ 
        id:8,
        te         


        

Answer 1

Updating the answer based upon your comment.

You want to listen to /activity/$theid/thread/$threadId:

Rather than nesting, break out the /thread/$threadId into it's own location at the root.

{
  "threadActivity": {
     "$activityId": {
        "$threadId" : {

        } 
     }
   } 
}

Now when a new thread is added you can just listen to /threadActivity/$activityId:

var ref = new Firebase('https://<my>.firebaseio.com/threadActivity');
var activityRef = ref.child('some-id');
activityRef.on('child_added', function(snap) {
  // will update you for every child at the location and each child added
  console.log(snap.val()); 
});