Restangular Promise Enhanced

restangularPromise.js

var buildings = Restangular.all("buildings").getList();

// New promise after adding the new building
// Now you can show in scope this newBuildings promise and it'll show all the buildings 
// received from server plus the new one added
var newBuildings = buildings.push({name: "gonto"});

var newBuildingsSame = buildings.call("push", {name: "gonto"});

// This is a promise of a number value. You can show it in the UI
var lengthPromise = buildings.get("length");

lengthPromise.then(function(length) {
  // Here the length is the real length value of the returned collection of buildings
});