"Integrating Factory, Service, and Controller in an Angular Webpage

I’m relatively new to Angular and I’m facing an issue while trying to run an Angular page. No matter what I do, I keep encountering an error stating that I have not created an Angular module.

Encountered an error when trying to instantiate the HotelApp module:

Error: [$injector:nomod] http://errors.angularjs.org/1.5.3/$injector/nomod?p0=Hote... blah blah blah

My code looks like this:

(function () {
            "use strict";
            angular.module(APPNAME)
                .factory('$hotelService', hotelServiceFactory);

            hotelServiceFactory.$inject = ['$methodRepository', $methodRepository];

            function hotelServiceFactory($methodRepository) {
                var hotelServiceObject = AjaxScripts;
                console.log("Hotel Service", hotelServiceObject);
            }
        })();

        (function () {
            "use strict";

            angular.module(APPNAME)
                .controller("HotelController", hotelController);

            hotelController.$inject = ['$scope', '$hotelService'];

            function TracksController($scope, $hotelService) {

I’m confused as to why it’s stating that my module is not instantiated when I have declared the APPNAME variable in both the script and in the ng-app.

Edit: I currently have:

 (function () {
                "use strict";
                angular.module("HotelApp", [])
                    .factory('$hotelService', hotelServiceFactory);

                hotelServiceFactory.$inject = ['$methodRepository', $methodRepository];

                function hotelServiceFactory($methodRepository) {
                    var hotelServiceObject = AjaxScripts;
                    console.log("Hotel Service", hotelServiceObject);
                }
            })();

However, it is still not functioning as expected.

Answer №1

When developing a module, be sure to follow this structure: angular.module('APPNAME',[]); Afterwards, you can utilize angular.module('APPNAME') to establish controllers, factories, or other components. However, it is crucial to include dependencies inside the module during its creation.

Answer №2

The property hotelServiceFactory.$inject is incorrectly defined.

//Implement this
hotelServiceFactory.$inject = ['$methodRepository'];
//Avoid this
//hotelServiceFactory.$inject = ['$methodRepository', $methodRepository];

function hotelServiceFactory($methodRepository) {
    var hotelServiceObject = AjaxScripts;
    console.log("Hotel Service", hotelServiceObject);
}

This issue is causing a compilation error.


Furthermore, the controller declaration does not match the controller function name.

angular.module(APPNAME)
    .controller("HotelController", hotelController);

hotelController.$inject = ['$scope', '$hotelService'];

//Implement this
function hotelController($scope, $hotelService) {
//Avoid this
//function TracksController($scope, $hotelService) {

Answer №3

It seems like you forgot to include the 2nd parameter as [], specifically for DI (Dependency Injection) within the module.

angular.module('APPNAME', [])

Answer №4

modify this

angular.module(APPNAME)

Replace it with

  angular.module('ReservationApp',[])

Answer №5

The initial stage in Angular involves creating a module, which serves as the foundation for your application. Here's an example of how you can do it:

angular.module('YOURAPPNAME', []);

The first parameter specifies the name of your application, while the second parameter, dependency injection, allows you to define any additional components your app may need such as plugins, services, directives, and more.

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