javascript - 如何自动检查嵌套 ng-repeat 中的元素？

Question

我有一个包含 ng-repeat 元素的 div。这些 ng-repeat 元素是相互关联的。 ng-repeat 的元素有复选框。我想要的是，当检查顶部 ng-repeat 的元素时，它应该自动检查其他 ng-repeat 中的元素。下图显示了元素的实际表示，下一张图显示了我实际想要实现的目标。

我确实尝试过这个，但它根本不起作用

<div actor-check-box  ng-repeat="actor in actors">

    <div  create-connections class="actor\{{$index}}" >
            <span><input class="checkbox-actor" type="checkbox" name="actor-checkbox"  id="actor-checkbox\{{$index}}">\{{actor}}</span>
    </div>

        <div ng-repeat="activity in activities">

        <div ng-if="actor == activity.id">

            <div ng-repeat = "impact in activity.text" >
                <div update-connections class="impact\{{$index}}actor\{{actors.indexOf(actor)}}" actor-id="actor\{{actors.indexOf(actor)}}">
                    <span><input class="checkbox-activity" type="checkbox" name="impact-checkbox" id="activity-checkbox\{{$index}}actor\{{actors.indexOf(actor)}}" activity-check-box>\{{impact}}</span>
                </div>

                <div ng-repeat="feature in features">

                    <div ng-if="actor == feature.id && impact == feature.key">
                        <div feature-connection ng-repeat = "feature in feature.text" class="feature\{{$index}}" activity-id="impact\{{activity.text.indexOf(impact)}}actor\{{actors.indexOf(actor)}}" id="">
                                 <span><input class="checkbox" type="checkbox" name="impact-checkbox" id="" >\{{feature}}</span>
                        </div>
                    </div>

                </div>

            </div>

        </div>

        </div>

</div>

指令代码:

    angular.module('mainModule').directive('activityCheckBox', function($interval) {
    return {
        restrict: 'EA',
        /*replace: false,*/
        scope: {
            ngModel:'='
        }
        /*require: 'createConnections','updateConnections', 'featureConnection'*/,
        /*transclude: true,*/

        link: function(scope, element, attrs) {

            element.find('input[type="checkbox"]').prop('checked',true);
        }
    };
});


angular.module('mainModule').directive('actorCheckBox', function($interval) {

    return {
        restrict: 'EA',
        /*transclude: true,*/

        link: function (scope, element, attrs, ctrl) {

            console.log(element);

            scope.$watch('ngModel', function(newValue){



                element.find('input[type="checkbox"]').prop('activityCheckBox',true).trigger('change');

            });
        }
    }
});

Answer 1

这无法使用我们检查和取消选中元素的正常方法来实现。我通过捕获 dom 在指令内使用了 emmit 和 brodcast。这是我编写的代码，它的工作原理非常神奇:

    angular.module('mainModule').directive('allCheckboxesBroadcast', function($interval) {
    return {
        restrict: 'A',
        controller: function($scope) {

            $scope.checkAll = function (model,id) {
                if (model == true){
                    $scope.$broadcast('allCheckboxes',id,  true);
                }else{
                    $scope.$broadcast('allCheckboxes',id,  false);
                }

            }

        }
    };
});

    angular.module('mainModule').directive('allCheckboxesListeners', function($interval) {
    return {
        restrict: 'A',
        link: function(scope, element, attrs) {

            attrs.$observe('actorId', function(value) {


                scope.$on('allCheckboxes', function(event, id,shouldCheckAllCheckboxes) {

                    actorId = 'actor' + id;
                    if (value == actorId){

                        element.find('input').prop('checked', shouldCheckAllCheckboxes);
                        $scope.$broadcast('featureCheckboxesListeners', actorId, true);
                    }

                });

            });

        }
    };
});