gistfile1.js

var app = angular.module('myApp', ['ngResource']);

app.controller('userController', ['$scope', '$resource', 'userService', function($scope, $resource, userService) {

    $scope.appName = 'MEAN App';

    $scope.getUsers = function () {
        userService.query(function(users) {
            $scope.users = users;
        });
    };

    $scope.getUsers();

    $scope.addUser = function() {
        var user = new userService();
        user.name = $scope.newUserName;
        user.$save(function (user) {
            $scope.getUsers();
            $scope.newUserName = '';
        });
    };

    $scope.editUser = function (user) {
        $scope.user = user;
        $scope.editUserName = user.name;
    };

    $scope.changeUserName = function (editUserName) {
        userService.update({userId : $scope.user._id}, {name : editUserName}, function (res) {
            $scope.getUsers();
            $scope.editUserName = '';
        });
    };

    $scope.deleteUser = function (user) {
        var user = userService.delete({userId : user._id}, function(res) {
            $scope.getUsers();
        });
    };

}]);