When a directive mandates the controller from a component, the controller may sometimes be returned empty

After struggling for the past 4 hours, I am still trying to solve this issue. The main problem lies within a parent directive that is being dynamically compiled into the DOM. Inside this directive, there is a component that is being transcluded.

$compile('<edit-modal entry="entry" positions="positions" day="day" is-filled="isFilled" week-start-date="weekStartDate" available-tags="availableTags" minigrids="minigrids">' +
        '<ns-gap-requests gap="entry" minigrids="minigrids"></ns-gap-requests></edit-modal>')(scope);

In the editModal HTML, the component is rendered as follows:

<div id="gapRequestsBody" ng-if="onGapRequest" ng-transclude></div>

This is the parent directive code snippet:

 return {
        restrict: 'E',
        replace: 'true',
        transclude:"true",
        templateUrl: 'Scripts/NewScheduler/Templates/Modals/editModal.html',

        scope: {
            positions: '<',
            entry: '=',
            day: '<',
            weekStartDate: '<',
            availableTags: '<',
            minigrids: '<'
        },

        controller: ['$scope', '$element', function ($scope, $element) {
            $scope.$parent.child = $scope;

            $scope.onGapRequest = false;
            $scope.changeToOnGapRequestPage = function() {
                $scope.onGapRequest = true;
            }

...

Below is the child component code:

(function() {
    'use strict';

    angular.module('newScheduler').component('nsGapRequests',
        {
            require:{editModalCtrl : "^editModal"},
            bindings: {
                gap: "=",
                minigrids:"<"
            },
            templateUrl: "Scripts/NewScheduler/Templates/Modals/nsGapRequestsModal.html",
            controller: [function () {
                var self = this;

                self.$onInit = function() {
                    console.log(self);
                }

                console.log(self.gap);
                console.log(self.minigrids);

                if (!self.assignToOption) {
                    self.assignToOption = { chosenRequester: null };
                }

                self.requesters = self.minigrids.map(function (minigrid) {
                    return minigrid.gridRows;
                }).reduce(function(a, b) {
                    return a.concat(b);
                })
                    .map(function (gridRows) {
                    return gridRows.user;
                    })
                .filter(function (value, index, array) {
                    return array.indexOf(value) === index;
                })
                .filter(function(user) {
                    return self.gap.requests.indexOf(user.id) !== -1;
                    });

            }],
            controllerAs: "gapRequests"
        });
})(); 

I am stuck because I cannot access the parent controller: console log of the child component members

Unexpectedly, editModalCtrl appears empty, which should not be the case!

If anyone could provide some assistance with this issue, it would be greatly appreciated. Thank you in advance.

Answer №1

The Controller may appear to be empty, but in reality, you simply haven't defined any properties or methods within it. It seems like you are working with the $scope instead. To resolve this issue, try adding some members and verifying:

controller: ['$scope', '$element', function ($scope, $element) {
    var me = this;
    me.someProperty = true;
    me.someFunction = function() {
    }
}

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