角纳克-重复滤波器不工作

Question

我有一个FAQ数组，我从ajax调用以及一个单独的FAQ类别数组中接收到这些问题，当您单击FAQ的类别时，只显示那些具有匹配的categoryId的FAQ。我已经尝试了很多不同的东西，包括ng显示，但现在我的努力集中在尝试获得filter:工作。任何帮助都会很大，appreciated...Here是代码：

   <div data-ng-controller="FAQController as dashboard" id="ctrler">

      <div ng-repeat="cat in dashboard.categories" class="col-md-2">
                <a data-ng-click="dashboard.filterForAnimation(cat)" href="#">
                    <div class="panel category-panel" data-fill-color="" data-context="">
                        <div class="panel-body background-6">
                            <span hidden class="cat-question-id" value="{{cat.id}}"></span>
                            <h4 class="question-category category-1">{{cat.name}}</h4>
                        </div>
                    </div>
                </a>
            </div>
    <!-- visbile FAQs -------------------->
        <div class="col-md-4 FAQ fades" data-ng-repeat="x in dashboard.visibleFaqs track by x.id | filter:dashboard.filter">
            <div class="panel-body background-6 bg-grd-dark" data-fill-color="true">
                <h4 class="headline question">{{x.question}} </h4>
                <p class="answer">{{x.answer}}</p>
                <a type="button" class="btn btn-success mb-1x mr-1x" href="/FAQs/{{x.id}}/edit">Edit</a>
                <button type="button" data-ng-click="dashboard.delete(FAQ)" class="btn btn-danger mb-1x mr-1x" data="{{x.id}}">Delete</button>
            </div><!-- /.panel-body -->
        </div>
      </div>
   </div>

这里是控制器：

       (function () {
        "use strict";
        angular.module(APPNAME)
            .controller("FAQController", FAQController);

        FAQController.$inject = ['$scope', '$baseController', '$faqService'];

        function FAQController($scope, $baseController, $faqService) {

            var vm = this;
            vm.headingInfo = "FAQs"
            vm.faqItems = null;               
            vm.categories = null;
            vm.visibleFaqs = null;
            vm.selectedCategoryId = null;

            vm.$faqService = $faqService;
            vm.$scope = $scope;

            vm.receiveFAQItems = _receiveFAQItems;
            vm.onError = _onError;
            vm.delete = _delete;
            vm.deleteSuccess = _deleteSuccess;
            vm.getItemSuccess = _getItemSuccess;
            vm.filterForAnimation = _filterForAnimation;
            vm.filter = _filter;


            $baseController.merge(vm, $baseController);

            vm.notify = vm.$faqService.getNotifier($scope);

            render();

            function render() {
                vm.$faqService.getCategories(vm.getItemSuccess, vm.onError);
                vm.$faqService.ajaxGetAll(vm.receiveFAQItems, vm.onError);
            }

            function _getItemSuccess(data) {
                vm.notify(function () {
                    vm.categories = data.items;
                });
            }

            function _receiveFAQItems(data) {
                vm.notify(function () {
                    console.log(data.items);
                    vm.faqItems = data.items;                        
                })
            }

            function _onError(jqXhr, error) {
                console.error("error");
            }

            function _delete(faqArray) {
                var index = vm.faqItems.indexOf(faqArray);
                vm.faqItems.splice(index, 1);
                var id = faqArray.id;
                vm.$faqService.ajaxDelete(id, vm.deleteSuccess, vm.onError)
            }

            function _deleteSuccess(faqArray) {
                console.log("delete successful");
            }

            function _filterForAnimation(item) {
                console.log("category clicked");
                vm.selectedCategoryId = item.id;
                for (var i = 0; i < vm.faqItems.length; i++) {
                    if (vm.faqItems[i].categoryId == vm.selectedCategoryId){                                                                
                        vm.filter(vm.faqItems[i].categoryId, vm.selectedCategoryId)
                    }
                }

            }

            function _filter(faq, categoryId) {
                if (faq == categoryId) {
                    return true;
                }
                else {
                    return false;
                }
            }

        }
    })()

Answer 1

与以前的答案相同，但方法不同：

将_filter函数更改为：

function _filter(faq) {
    return faq.categoryId == vm.selectedCategoryId;
}

您的vm.selectedCategoryId由_filterForAnimation动态设置，因此它将工作。

您还可以使用这样的角度过滤器提供程序：

function _filter() {
    return function(items, categoryId) {
        return items.filter(function(item) {
            return item.id == categoryId;
        });
    }

声明

angular.module(APP_NAME)
//...
.filter('categoryFilter', _filter);

在你的标记中：

data-ng-repeat="x in dashboard.visibleFaqs track by x.id | categoryFilter:dashboard.selectedCategoryId"