gistfile1.txt

.factory('FavorStore',function($q,$firebase,FireBase,UserAuth,fireBaseUrl){


    var deferredStore = $q.defer()

    var user = UserAuth.getLoggedInUser()

  
    user.then(function(user){

      var userPath = 'users/' + user.id + '/favors'

      var userStore = new Firebase(fireBaseUrl + userPath)

      deferredStore.resolve($firebase(userStore))
    })
    

    return deferredStore.promise;





})

//inject the FavorStore service
.factory('FavorData',function(FavorStore){


  //this is the Ref
  var favors = FavorStore;


  function _countFavors(){
      //create promise
      var deferredCount = $q.defer()

      favors.once('value', function(snapshot) {
        var count = 0;
      
        snapshot.forEach(function(childSnapshot) {
        count++;
        });
        
        deferredCount.resolve(count)
      });
  }



  //public API
  return {

    getFavorCount : _countFavors



  }



})


//in controller

FavorData.getFavorCount().then(function(count){
    $scope.countedFavors = count;

})