AngularJs如何用其他数组元素过滤ngRepeat

AngularJs How to filter ngRepeat with another array elements

本文关键字：过滤 ngRepeat 数组元素其他何用 AngularJs 更新时间：2023-09-26

如果数组$scope.myitems中存在ID，是否有从$scope.items筛选的选项？

ng-repeat="item in items | filter:{item.id == myitems}

演示：http://codepen.io/anon/pen/rOeGYB

angular.module('myapp', [])
  .controller("mycontroller", function($scope) {
    $scope.items = [
      {
        "id": 1,
        "name": "Melodie"
      }, {
        "id": 2,
        "name": "Chastity"
      }, {
        "id": 3,
        "name": "Jescie"
      }, {
        "id": 4,
        "name": "Hamish"
      }, {
        "id": 5,
        "name": "Germaine"
      }, {
        "id": 6,
        "name": "Josephine"
      }, {
        "id": 7,
        "name": "Gail"
      }, {
        "id": 8,
        "name": "Thane"
      }, {
        "id": 9,
        "name": "Adrienne"
      }, {
        "id": 10,
        "name": "Geoffrey"
      }, {
        "id": 11,
        "name": "Yeo"
      }, {
        "id": 12,
        "name": "Merrill"
      }, {
        "id": 13,
        "name": "Hoyt"
      }, {
        "id": 14,
        "name": "Anjolie"
      }, {
        "id": 15,
        "name": "Maxine"
      }, {
        "id": 16,
        "name": "Vance"
      }, {
        "id": 17,
        "name": "Ashely"
      }, {
        "id": 18,
        "name": "Dominic"
      }, {
        "id": 19,
        "name": "Cora"
      }, {
        "id": 20,
        "name": "Bo"
      }
    ];
    $scope.myitems = ['0', '3', '6', '10', '19']
  });

<link href="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.14/angular.min.js"></link>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myapp" ng-controller="mycontroller" class="container">
  <h4>My items</h4>
  <ul class="list-group">
    <li class="list-group-item" ng-repeat="item in items | filter:{}">{{item.name}}</li>
  </ul>
  <h4>Total items</h4>
  <ul class="list-group">
    <li class="list-group-item" ng-repeat="item in items">{{item.name}}</li>
  </ul>
</div>

您的问题是，您试图在要迭代的对象的子属性上获得匹配。

来自文档：

请注意，命名属性将与同一级别上的属性匹配只有，而特殊的$属性将与相同的属性匹配水平或更深。例如，数组项，如｛name:｛first:'John'，last:"Doe"｝｝将不由｛name:"John"｝匹配，而是由匹配｛$："John"｝。

我建议您制作自定义过滤器。我已经通过实现自定义过滤器更改了您的代码，这是您需求的工作副本。

<li class="list-group-item" ng-repeat='item in items | customArray:myitems:"id"'>{{item.name}}</li>

在此处查看完整的plunkerhttps://codepen.io/anon/pen/PPNJLB

使用这个答案中的优秀过滤器：

https://stackoverflow.com/a/21171880/2419919

.filter('inArray', function($filter){
    return function(list, arrayFilter, element){
        if(arrayFilter){
            return $filter("filter")(list, function(listItem){
                return arrayFilter.indexOf(listItem[element]) != -1;
            });
        }
    };
});

angular.forEach($scope.items, function (v, k) { 
   console.log($scope.myitems[v.id - 1]);
   $scope.myitems[v.id- 1].name = v.name;
}, $scope.myitems);

只是为了一些提示。希望帮助

Kashif Mustafa给出的上述例子非常有效。我们所要做的唯一更改是，将id解析为字符串中的整数。

cshtml:

    <div ng-repeat="e in AllEntities | customArray:SelectedEntities:'id'">{{ e.label }}</div>

控制器：

     var eIds = detail.entityIds;
     var eArray = eIds.split(",");
     if (eArray.length > 0) {
         $scope.showEntities = true;
         $scope.showNone = false;
         for (var i = 0; i < eArray.length; i++) {
            $scope.SelectedEntities.push(parseInt(eArray[i]));
           }
     }

过滤器：

(your controller).filter('customArray', function ($filter) {
    return function (list, arrayFilter, element) {
        if (arrayFilter) {
            return $filter("filter")(list, function (listItem) {
                return arrayFilter.indexOf(listItem[element]) != -1;
            });
        }
    };
});