"An error has occurred stating that the function Factory.function() in AngularJS

I'm a beginner with AngularJS and could use some assistance!

My issue involves retrieving JSON data from a URL in a factory function and returning it to the controller. However, I keep getting an error stating that the function doesn't exist. While I've been following a tutorial series on Udemy, the source of the data I'm working with is different, so the solution isn't covered in the videos.

Code:

angular.module('MainModule', ['ngRoute']);
angular.module('MainModule').config(function($routeProvider){
    $routeProvider.when('/', {
        templateUrl: '/templates/index.html'
    });
    $routeProvider.when('/item/:id', {
        templateUrl: '/templates/item.html',
    });
});
angular.module('MainModule').controller('ItemsController', function($scope, ItemsFactory, MainSettings){
    ItemsFactory.getItems().then(function(response){
        $scope.items = response;
    });
    $scope.settings = MainSettings;
});
angular.module('MainModule').controller('ItemController', function($scope, $routeParams, ItemsFactory, MainSettings){
    $scope.item = ItemsFactory.getItem($routeParams.id);
    $scope.settings = MainSettings;
});
angular.module('MainModule').factory('ItemsFactory', function($http, $log){
    var factory = {};
    var items = false;
    factory.getItems = function(){
        $http.get('/index.php').success(function(response){
            items = response.items;
            return items;
        });
    };
    factory.getItem = function(item){
        var i = 0;
        while (i < items.length) {
            if (items[i].id == item) {
                return items[i];
            }
            i++;
        }
        return false;
    };
    return factory;
});
angular.module('MainModule').constant('MainSettings', {
    title: 'Simple RSS Reader',
    version: '1.0'
});

Error:

Error: ItemsFactory.getItems(...) is undefined
@http://192.168.1.234:1000/js/angular-module.js:11:2
invoke@http://192.168.1.234:1000/js/angular.js:3965:14
instantiate@http://192.168.1.234:1000/js/angular.js:3976:23
$ControllerProvider/this.$get</<@http://192.168.1.234:1000/js/angular.js:7307:18
nodeLinkFn/<@http://192.168.1.234:1000/js/angular.js:6696:34
forEach@http://192.168.1.234:1000/js/angular.js:332:11
nodeLinkFn@http://192.168.1.234:1000/js/angular.js:6683:11
compositeLinkFn@http://192.168.1.234:1000/js/angular.js:6131:13
publicLinkFn@http://192.168.1.234:1000/js/angular.js:6027:30
ngViewFillContentFactory/<.link@http://192.168.1.234:1000/js/angular-route.js:915:7
nodeLinkFn@http://192.168.1.234:1000/js/angular.js:6737:13
compositeLinkFn@http://192.168.1.234:1000/js/angular.js:6131:13
publicLinkFn@http://192.168.1.234:1000/js/angular.js:6027:30
createBoundTranscludeFn/boundTranscludeFn@http://192.168.1.234:1000/js/angular.js:6151:21
controllersBoundTransclude@http://192.168.1.234:1000/js/angular.js:6758:18
update@http://192.168.1.234:1000/js/angular-route.js:865:25
$RootScopeProvider/this.$get</Scope.prototype.$broadcast@http://192.168.1.234:1000/js/angular.js:13070:15
updateRoute/<@http://192.168.1.234:1000/js/angular-route.js:547:15
qFactory/defer/deferred.promise.then/wrappedCallback@http://192.168.1.234:1000/js/angular.js:11659:31
qFactory/defer/deferred.promise.then/wrappedCallback@http://192.168.1.234:1000/js/angular.js:11659:31
qFactory/ref/<.then/<@http://192.168.1.234:1000/js/angular.js:11745:26
$RootScopeProvider/this.$get</Scope.prototype.$eval@http://192.168.1.234:1000/js/angular.js:12788:16
$RootScopeProvider/this.$get</Scope.prototype.$digest@http://192.168.1.234:1000/js/angular.js:12600:15
$RootScopeProvider/this.$get</Scope.prototype.$apply@http://192.168.1.234:1000/js/angular.js:12892:13
done@http://192.168.1.234:1000/js/angular.js:8427:34
completeRequest@http://192.168.1.234:1000/js/angular.js:8641:7
createHttpBackend/</xhr.onreadystatechange@http://192.168.1.234:1000/js/angular.js:8580:1

<div class="ng-scope" ng-view="">

Thanks for any help you can provide, Matt!

javascriptjsonangularjs

Answer №1

After applying both solutions individually or together, the error was resolved, however the data is still not being retrieved. Could the order in which the injections are listed in the controller impact their functionality?

Answer №2

When I encountered a similar issue, I found a solution by injecting my Factory in the following manner -

angular.module('MainModule').controller('ItemsController', ['ItemsFactory', function($scope, ItemsFactory, MainSettings){
    ItemsFactory.getItems()
    .success(function(response) {..})
    .error(function(response) {..})
    .then(function(response){
        $scope.items = response;
    });
    $scope.settings = MainSettings;
}]);

If you plan to use a minification library or RequireJS, it is advisable to follow this approach. Additional details can be found here in the official documentation.

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