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Revealing Module Pattern with Angular


Today code is driving me mad again especially the Angular with the Revealing Module Pattern in an Angular service. When I started I saw nothing wrong with it... now apart from not working... I don't know. Any way know I want to know if it's angular or me doing something stupid. here's the code:

angular.module('homeAdmin.services', [])
.factory('dataService', function ($http, $q) {
    'use strict';
    function _contentTypes(){
        var intialized = false;
        var _models = [];
        function _isReady() {
            return intialized;
        };
        return {
            isReady: _isReady
        };
    };

    return {
        contentTypes: _contentTypes
    };
});

And here's where it is called:

var contentTypeCtrl = ['$scope','$http','$window','dataService', function ($scope, $http, $window, dataService) {
'use strict';
$scope.isBusy = false;
$scope.data = dataService;
$scope.contentType = {};

$scope.name = 'Content Type';
$scope.init = function () {
    console.log('contentTypeCtrl initialized');
};

if (dataService.contentTypes.isReady() == false) {
    console.log("Hello let's load some data!"); 
}}]

And here's how firefox gives me the finger:

[16:01:56.864] "Error: dataService.contentTypes.isReady is not a function
contentTypeCtrl<@http://localhost:49499/App/plugins/home/admin/ngen/content-type-ctrl.js:12
invoke@http://localhost:49499/Scripts/angular/angular.js:2902
instantiate@http://localhost:49499/Scripts/angular/angular.js:2914
@http://localhost:49499/Scripts/angular/angular.js:4805
updateView@http://localhost:49499/Scripts/angular/angular-ui-router.js:1317
$ViewDirective/directive.compile/</eventHook@http://localhost:49499/Scripts/angular/angular-ui-router.js:1276
Scope.prototype.$broadcast@http://localhost:49499/Scripts/angular/angular.js:8307
$StateProvider/$get/transitionTo/$state.transition<@http://localhost:49499/Scripts/angular/angular-ui-router.js:1067
qFactory/defer/deferred.promise.then/wrappedCallback@http://localhost:49499/Scripts/angular/angular.js:6846
qFactory/ref/<.then/<@http://localhost:49499/Scripts/angular/angular.js:6883
Scope.prototype.$eval@http://localhost:49499/Scripts/angular/angular.js:8057
Scope.prototype.$digest@http://localhost:49499/Scripts/angular/angular.js:7922
Scope.prototype.$apply@http://localhost:49499/Scripts/angular/angular.js:8143
done@http://localhost:49499/Scripts/angular/angular.js:9170
completeRequest@http://localhost:49499/Scripts/angular/angular.js:9333
createHttpBackend/</xhr.onreadystatechange@http://localhost:49499/Scripts/angular/angular.js:9304"

Help? Anyone??

Here's an example how the isready function should be used:

    if (dataService.contentTypes.isReady() == false) {
    $scope.isBusy = true;
    dataService.contentTypes.get()
        .then(function () {
        }, function () {
            alert('contentTypes retrieval failed');
        })
        .then(function () {
            $scope.isBusy = false;
        });
}

And consume the data like this:

<tr data-ng-repeat="model in data.contentTypes.models">

Solution

  • I'm not proficient with Angular, so excuse me if I'm way off here (-!

    It looks like isReady() is returned by calling contentTypes() - but I don't see a call to contentTypes - only a reference, which points to the closure-fn _contentTypes.

    Is it possible that this should read like below instead ?

    dataService.contentTypes().isReady()
    

    *added '()' to actually call the contentTypes function, which in turn will return the isReady() function