Global service involving multiple routes - you may wish to get another model beside the main user without using global variables

GlobalService.js

// this is building on top of the excellent work by 
// https://github.com/linnovate/mean/compare/no-window-user
// I simply added error handling and the ability to access multiple routes

'use strict';

//Global service for global variables
angular.module('mean.system').factory("Global", ['$http',
    function($http) {
  
      var self = this;
        
      return {

	getModelOne : function(){

                self.data = {
                    
                    userPromise: $http.get('/route/to/modelone')
                                    .success(function(user) {
                                    	
                                    	// note this result may not be a user - whatever your data is... 
                                    	
                                        if (user) {
                                            self.data.user = user;
                                            self.data.authenticated = true;
                                        }
                                     })
                                    .error(function(error) {
                                        self.error = error;
                                    })
                };

		    	return self.data;
	    	},

        getModelTwo : function(){

            self.data = {
                
                userPromise: $http.get('/route/to/modeltwo')
                    .success(function(user) {
                        if (user) {
                             self.data.user = user;
                             self.data.authenticated = true;
                         }

                     })
                    .error(function(error) {
                          self.error = error;
                     })

              };

              return self.data;

               
        }
        	
   }

}]);

IndexController.js

'use strict';

angular.module('mean.system').controller('IndexController', ['$scope', 'Global', function ($scope, Global) {
  
    $scope.user = Global.getModelOne(); // or getModelTwo() which ever you need...  

}]);