gistfile1.js

    Service:
    
    UserService.getUser = function(){
            return $http( { method: 'GET', url: '/users/me', cache : true } )
                .success(function(results, status){
            	if( (status!= 200) || (typeof(results) == "undefined") ){
            		alert('logged out!');
            		location.href = "/index.html";
            	}
    		});
    }
    
    Controller:
    
    userService.getUser().then(function(promise){
        $scope.user = promise.data;
        $scope.$apply();
    });