Angular Location Hack

      $scope.detachLocationChangeListener = $scope.$on('$locationChangeStart', function (event, next, current) {
          event.preventDefault(); //prevent the navigation
          $scope.showSaveChangesDialog = true; //dialog control
          $scope.nextRoute = $location.url(next).hash(); //grab requested location
      });

      $scope.confirmSaveChanges = function (answer) {
        if (answer == true) {
          alert("clicked yes, save changes");
        }
        else{
          alert("clicked no, discard changes");
        }
        $scope.detachLocationChangeListener();
        $location.path($scope.nextRoute); //regardless the action we want to navigate to the request location
      }