What is causing my Directive to trigger the error "Error: $injector:unpr Unknown Provider"?

I have been diligently working on updating my Controllers, Factories, and Directives to align with the recommended Angular Style Guide for Angular Snippets.

So far, I have successfully refactored the Controllers and Factories to comply with the new style guide, but I am facing challenges with the Directives.

Unknown provider: $scopeProvider <- $scope <- platformHeaderDirective

The revised Directive structure encountering errors:

(function() { "use strict";

    angular
        .module('platformHeaderDirectives', [])
        .directive('platformHeader', directive);
    directive.$inject = ['$scope'];
    /* @ngInject */
    function directive ($scope) {
        var directive = {
            templateUrl : "header/platform_header/platformHeader.html",
            restrict    : "E",
            replace     : true,
            bindToController: true,
            controller: Controller,
            controllerAs: 'vm',
            link: link,
            scope: {
            }
        };
        return directive;
        function link(scope, element, attrs) {

        }
    }
    /* @ngInject */
    function Controller () {

    }
})();

Comparison with the functional old Directive without errors:

(function() { "use strict";

    angular.module('platformHeaderDirectives', [])

    .directive('platformHeader', function() {
        return {
            templateUrl : "header/platform_header/platformHeader.html",
            restrict    : "E",
            replace     : true,
            scope       : false,
            controller  : ['$scope',
                           function($scope) {

                /** Initialize platformHeader scope */
                // var vs = $scope;

            }]
        }
    });

})();

Answer №1

$scope cannot be directly injected into a directive. I made changes to the code by injecting $scope into the controller of the directive.

Updated Code:

(function() { "use strict";

    angular
        .module('platformHeaderDirectives', [])
        .directive('platformHeader', directive);

    /* @ngInject */
    function directive () {
        var directive = {
            templateUrl : "header/platform_header/platformHeader.html",
            restrict    : "E",
            replace     : true,
            bindToController: true,
            controller: Controller,
            controllerAs: 'vm',
            link: link,
            scope: {}
        };
        return directive;
        function link(scope, element, attrs) {

        }
    }
    /* @ngInject */
    Controller.$inject = ['$scope'];
    function Controller ($scope) {

    }
})();

Answer №2

Although you may have already received an answer, I would like to provide a more detailed explanation.

In AngularJS, $scope is not considered a service (there is no $scopeProvider), but rather a special entity that is automatically injected by Angular itself into the controller as a child of $rootScope.

As a result, you cannot explicitly inject $scope in services, directives, etc.

However, as 'jad-panda' mentioned in their response, you can explicitly inject $scope in the controller of a directive (not directly into the directive).

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