Show professor lastname on navbar

app/partials/sidebar/navbar.controllers.js

@@ -5,13 +5,25 @@
         .module('app')
         .controller('NavbarCtrl', NavbarCtrl)
 
-    NavbarCtrl.$inject = ['$scope', 'authentication', '$state'];
-    function NavbarCtrl($scope, authentication, $state) {   
+    NavbarCtrl.$inject = ['$scope', 'authentication', '$state', 'professors'];
+    function NavbarCtrl($scope, authentication, $state, professors) {   
         var vm = this;
+        var user = authentication.currentUser();
+        var professorid = user._id;
+
+        professors.get({ id: professorid },
+            function (successResult){
+                vm.professor = successResult;
+            },
+            function (){
+                console.log("Error al obtener los datos.");
+        });
 
         vm.logout = function () {
             authentication.logout();
             $state.go('login');
         };
+
+
     };
 })();