angularProject/app/directives/navmenu.js

app.directive('navMenu',[function(){
  return {
    restrict: 'E',
    scope: {
      toggleMenu: '&',
      isActive: '&'
    },
    templateUrl: 'app/views/nav-menu.html',
    controller: function($scope,$location){
      $scope.isActive = function(linkPath){
        if(linkPath == $location.path()){
          return true;
        } else{
          return false;
        }

      }
    }
  }
}])