join_angularfire_profiles.js

app.factory('JoinedUser', function($firebaseObject) {
  return $firebaseObject.$extend({
    
    $$updated: function(snapshot) {
      if( !this.profile ) {
        // back up and get a reference to the profile path
        var ref = snapshot.ref().parent().child('profile/' + snapshot.key());
        this.profile = $firebaseObject(ref);
      }
    },
    
    /*
     * If we want to automatically save the profile when saving the user object, we could uncomment this
    $save: function() {
      if( this.profile ) {
        // we save this blindly and don't handle errors or wait for results here
        this.profile.$save(); 
      }
      return $firebaseObject.prototype.$save.call(this);
    },
    */
    
    $destroy: function() {
      if( this.profile ) {
        // stop listening for changes to the profile
        this.profile.$destroy();
      }
      $firebaseObject.prototype.$destroy.call(this);
    }
    
    toJSON: function() {
      // don't returt the profile when saving this object
      var json = $firebaseObject.prototype.toJSON.apply(this, arguments);
      delete json.profile;
      return json;
    }
    
  });
});

// usage
app.controller('UseTheService', function($scope, JoinedUser) {
  var ref = new Firebase("https://<YOUR-FIREBASE-APP>.firebaseio.com/").child('users/kato');
  $scope.user = new JoinedUser(ref);
});

<3

Very nice.

I came across your work just after this actually here (i think):https://www.firebase.com/blog/2013-10-01-queries-part-one.html#join

Perhaps I'm just not storing my data efficiently, but would this be appropriate for selecting a value on 'users' as the uid for 'profiles':

    function updated(snapshot) {
      if(!this.profile) {
        // back up and get a reference to the profile path
        var ref = snapshot.ref().parent().child('profiles/' + snapshot.val().profileId);
        this.profile = $firebaseObject(ref);
      }
    }

Yea dude, thanks so much for taking the time out of your day to educate me; I'm very appreciative of that, catch you tomorrow! ^_^