Angular rendering engine & Firebase profile retrieval - angularjs

Question

What I want:
firebase checks authentication of page load
firebase returns userID if logged in
my function returns the username associated with the user.Id
assign to the variable that represents the username
render!
All on page load
Current Behavior:
The following configuration retrieves the username but will only display the username once I click a login button I have made.For some reason even though I am currently logged in I must click the login button. I want a set up where if I am logged in the app will just know I am logged in from the start!
crossfitApp.controller('globalIdCtrl', ["$scope",'$q','defautProfileData','$timeout', function ($scope,$q,defautProfileData,$timeout) {
var dataRef = new Firebase("https://glowing-fire-5401.firebaseIO.com");
$scope.myFbvar =null;
$scope.authenticated={
currentUser: null,
avatarUrl: "",
emailAddress: "",
settings: "",
currentUserid: null,
};
function getProfile(userID,assignMe){
myprofile= new Firebase("https://glowing-fire-5401.firebaseio.com/profiles/"+userID+"/username");
myprofile.once('value', function(nameSnapshot) {
assignMe = nameSnapshot.val();
});
};
$scope.auth = new FirebaseSimpleLogin(dataRef, function(error, user) {
if (error) {
//Error
console.log ('error');
}
else if (user) {
//logged in
$timeout(function() {
getProfile(user.id,);
});
console.log('logged in');
$scope.authenticated.currentUserid = user.id ;
}
else {
// user is logged out
console.log('logged out');
$timeout(function() {
$scope.authenticated.currentUserid =null;
});
}
});
}]); //Global

Answer 1

In your else if( user ) logic, you forgot to put your scope var inside the $timeout, so it is being set properly, but Angular doesn't learn about it until the next time $apply is called (e.g. ng-click, ng-submit, etc).
Thus:
else if (user) {
//logged in
$timeout(function() {
getProfile(user.id,);
$scope.authenticated.currentUserid = user.id ; // moved into $timeout
});
console.log('logged in');
}
You can read more about why this matters here and here.