16

以下 HTML、Javascript 和 JSON 正确呈现，但过滤器根本不起作用。我们做错了什么？

<div data-ng-controller="dashboard_controller">
    <h1>
        Catalogs
        <input type="text" data-ng-model="catalog_filter" placeholder="Filter Distributors">
    </h1>

    <div class="catalogs_listing">
        <ul data-ng-repeat="catalog in catalogs | filter:catalog_filter">
            <li><a href="{{catalog.distributor_id}}/d/products/catalog_view/{{catalog.uid}}">
                <div class="catalog_thumb">
                    <div class="catalog_thumb_image">
                        <img src="{{catalog.thumb_image}}" />
                    </div>
                </div>
                <div class="catalog_info">
                    <h2>{{distributors[catalog.distributor_id].name}}
                        <span>{{catalog.products_count}}p</span>
                    </h2>
                    <p>{{catalog.name}}</p>
                </div>
                </a>
            </li>
        </ul>
    </div>
</div>

Javascript：

app.controller('dashboard_controller', function ($scope, $http) {
    $http.get('./api/distributors/my').then(function (res) {
        $scope.distributors = res.data;
    });
    $http.get('./api/dashboard/catalogs').then(function (res) {
        $scope.catalogs = res.data;
    });
});

而这 2 个 JSON：

api/分销商/我的：

{
    "data": {
        "9kkE1sL8vXSZMVaL": {
            "created": "1346840145.22",
            "uid": "9kkE1sL8vXSZMVaL",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Nikee",
            "description": "Just do it",
            "image_file": "LogoNike.jpg",
            "modified": "1368443518.3894",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": "gbp"
        },
        "1OBKUhpb8srwHVVb": {
            "created": "1346840213.41",
            "uid": "1OBKUhpb8srwHVVb",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Zappos",
            "description": "The webs most popular shoe store",
            "image_file": "zappos.jpg",
            "modified": "1347006513.93",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": null
        },
        "qHPXDp5lSQuz9z3Q": {
            "created": "1346840305.78",
            "uid": "qHPXDp5lSQuz9z3Q",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Kitchenaid",
            "description": "For the way it's made",
            "image_file": "kitchenaid_logo.gif",
            "modified": "1346840305.78",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": null
        },
        "9K4G8gE1sh4qpVG2": {
            "created": "1346840443.32",
            "uid": "9K4G8gE1sh4qpVG2",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Unilever",
            "description": "Create a better future",
            "image_file": "Unilever-logo.jpg",
            "modified": "1346842125.2",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": null
        },
        "55ORaD7h0EMcaX82": {
            "created": "1346840529.93",
            "uid": "55ORaD7h0EMcaX82",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Dell",
            "description": "The power to do more",
            "image_file": "dell-logo.jpg",
            "modified": "1346840529.93",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": null
        },
        "2LHf5ZipYjA2PdXu": {
            "created": "1352084334.37",
            "uid": "2LHf5ZipYjA2PdXu",
            "created_by": "3MO4JyiB9rMWTfBu",
            "name": "Online Retailer",
            "description": "Online Retailer",
            "image_file": "Home and Giftware.gif",
            "modified": "1352954806.28",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "MdTDL72ynFySuUCR": {
            "created": "1352870158.83",
            "uid": "MdTDL72ynFySuUCR",
            "created_by": "1JiAF71w5VPHGgJe",
            "name": "Uniuniform",
            "description": "Uniform Suppliers",
            "image_file": "CWLogo.png",
            "modified": "1358317144.85",
            "modified_by": "sv3HuiiRbiuHWkul",
            "currency": null
        },
        "oyYmdDcod9fseZng": {
            "created": "1352934703.42",
            "uid": "oyYmdDcod9fseZng",
            "created_by": "cu3OraVD7WclpLrX",
            "name": "Heidy Pharmaceuticals",
            "description": "Pharmaceutical Solutions",
            "image_file": "heidy.jpg",
            "modified": "1352934703.43",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "Kfs4HdFUfz6j2l2I": {
            "created": "1352953682.22",
            "uid": "Kfs4HdFUfz6j2l2I",
            "created_by": "cu3OraVD7WclpLrX",
            "name": "xxx",
            "description": "Online Retailer",
            "image_file": "xxx.gif",
            "modified": "1352953828.34",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "g2qRqUWvPSLRvLQr": {
            "created": "1352953924.68",
            "uid": "g2qRqUWvPSLRvLQr",
            "created_by": "cu3OraVD7WclpLrX",
            "name": "ddd",
            "description": "Natural Product Retailer",
            "image_file": "yes-to.jpg",
            "modified": "1352953924.68",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "bbSu3jpFhdkG3TJR": {
            "created": "1352954016.22",
            "uid": "bbSu3jpFhdkG3TJR",
            "created_by": "cu3OraVD7WclpLrX",
            "name": "llll",
            "description": "Artificial Product Retailer",
            "image_file": "l.jpg",
            "modified": "1352954016.23",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "X9xWF9VrRDqGWZ6S": {
            "created": "1352954722.97",
            "uid": "X9xWF9VrRDqGWZ6S",
            "created_by": "cu3OraVD7WclpLrX",
            "name": "zzz",
            "description": "Toy Manufacturer",
            "image_file": "zzz.jpg",
            "modified": "1352954722.97",
            "modified_by": "cu3OraVD7WclpLrX",
            "currency": null
        },
        "02CCPuWtM6ZJVgiQ": {
            "created": "1367741881.7113",
            "uid": "02CCPuWtM6ZJVgiQ",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "test brand",
            "description": "xxxx",
            "image_file": null,
            "modified": "1367741882.5129",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": null
        },
        "GjsdgMCzp1n379j0": {
            "created": "1369136484.1802",
            "uid": "GjsdgMCzp1n379j0",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "testing all products",
            "description": "just a test",
            "image_file": null,
            "modified": "1369136484.5298",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": "usd"
        },
        "spVsxtJVroMkXQ1N": {
            "created": "1370508658.353",
            "uid": "spVsxtJVroMkXQ1N",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "pppp Import",
            "description": "",
            "image_file": null,
            "modified": "1370508658.4394",
            "modified_by": "3W7AoIQHTtvPauaK",
            "currency": "usd"
        }
    }

api/仪表板/目录

{
    "data": {
        "UPf17vFhMhiM2yYl": {
            "created": "1352960014.4",
            "uid": "UPf17vFhMhiM2yYl",
            "created_by": "3MO4JyiB9rMWTfBu",
            "name": "All Products",
            "description": "This catalog contains all of your products",
            "modified": "1352960014.4",
            "modified_by": "3MO4JyiB9rMWTfBu",
            "distributor_id": "9kkE1sL8vXSZMVaL",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "0",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "ZUfcKpz0VrJZZZvW": {
            "created": "1354172792.79",
            "uid": "ZUfcKpz0VrJZZZvW",
            "created_by": "ORIGWlEFxbuE945J",
            "name": "test catalog",
            "description": "",
            "modified": "1354172792.79",
            "modified_by": "ORIGWlEFxbuE945J",
            "distributor_id": "9kkE1sL8vXSZMVaL",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "0",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "6YoSSDCzLH8gEokf": {
            "created": "1360706477.5283",
            "uid": "6YoSSDCzLH8gEokf",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "xxxx",
            "description": "",
            "modified": "1360706477.5312",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "9kkE1sL8vXSZMVaL",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "3",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "4AwqE7iTNQmjSBED": {
            "created": "1360794567.8451",
            "uid": "4AwqE7iTNQmjSBED",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1360794567.8454",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "4AwqE7iTNQmjSBED",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "1",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "02CCPuWtM6ZJVgiQ": {
            "created": "1367741881.7916",
            "uid": "02CCPuWtM6ZJVgiQ",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1367741881.7919",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "02CCPuWtM6ZJVgiQ",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "2095",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "9kkE1sL8vXSZMVaL": {
            "created": "1368165852.0352",
            "uid": "9kkE1sL8vXSZMVaL",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1368165852.0361",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "9kkE1sL8vXSZMVaL",
            "image": null,
            "start": null,
            "end": null,
            "is_archived": null,
            "products_count": "26",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "ZmSiqOK2C2Sq3MWB": {
            "created": "1368958571.9548",
            "uid": "ZmSiqOK2C2Sq3MWB",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "Test Catalog",
            "description": "",
            "modified": "1368958571.9581",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "02CCPuWtM6ZJVgiQ",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "1",
            "products_count": "0",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "flzoMbizDDTDpjgc": {
            "created": "1368958778.8623",
            "uid": "flzoMbizDDTDpjgc",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "xzczxc",
            "description": "",
            "modified": "1368958778.8637",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "02CCPuWtM6ZJVgiQ",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "29",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "KfRJHxp7jBnBGCJ5": {
            "created": "1369219487.4418",
            "uid": "KfRJHxp7jBnBGCJ5",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "hhh",
            "description": "",
            "modified": "1369219487.4433",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "9kkE1sL8vXSZMVaL",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "7",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "spVsxtJVroMkXQ1N": {
            "created": "1370508658.3567",
            "uid": "spVsxtJVroMkXQ1N",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1370508658.3575",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "spVsxtJVroMkXQ1N",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "343",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "1OBKUhpb8srwHVVb": {
            "created": "1370857435.5606",
            "uid": "1OBKUhpb8srwHVVb",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1370857435.5612",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "1OBKUhpb8srwHVVb",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "4",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "wXMHFdPyiXFBuRjJ": {
            "created": "1370864864.1247",
            "uid": "wXMHFdPyiXFBuRjJ",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "x",
            "description": "",
            "modified": "1370864864.1278",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "spVsxtJVroMkXQ1N",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "10",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "GjsdgMCzp1n379j0": {
            "created": "1371116610.6898",
            "uid": "GjsdgMCzp1n379j0",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1371116610.6902",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "GjsdgMCzp1n379j0",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": "2095",
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        },
        "gvWLNWwsI3B7mnCU": {
            "created": "1371116669.5872",
            "uid": "gvWLNWwsI3B7mnCU",
            "created_by": "3W7AoIQHTtvPauaK",
            "name": "All Products",
            "description": null,
            "modified": "1371116669.5877",
            "modified_by": "3W7AoIQHTtvPauaK",
            "distributor_id": "gvWLNWwsI3B7mnCU",
            "image": null,
            "start": "0",
            "end": "0",
            "is_archived": "0",
            "products_count": 0,
            "thumb_image": "resources/media/default_image.jpg.thumbs/165x165.jpg"
        }
    }
4

7 回答 7

43

角度过滤器无法将对象的对象作为输入处理。ng-repeat 可以渲染它们，但过滤器需要一个对象数组。解决这个问题的最简单方法是让服务器返回一个没有命名键的数组。您还可以在每次请求后以角度转换响应（更昂贵）。

于 2013-07-16T12:21:38.100 回答
34

正如 Narretz 已经提到的，Angular 过滤器不能将对象的对象作为输入处理。但是您可以编写自己的简单过滤器，将对象的对象转换为对象数组。您可以通过链接使用阵列过滤器后面的角度过滤器。

<ul data-ng-repeat="catalog in catalogs | array | filter:catalog_filter">

您的数组过滤器可以像这样简单：

app.filter('array', function() {
  return function(items) {
    var filtered = [];
    angular.forEach(items, function(item) {
      filtered.push(item);
    });
   return filtered;
  };
});
于 2013-09-26T20:49:21.797 回答
3

假设您想使用分销商名称过滤目录，那么以下自定义过滤器可以完成这项工作：

<div data-ng-controller="dashboard_controller">

<h1>
    Catalogs
    <input type="text" data-ng-model="catalog_filter"  placeholder="Filter Distributors">
</h1>

    <div class="catalogs_listing">
        <ul data-ng-repeat="catalog in catalogs | distributorName: catalog_filter:distributors">
            <li> <a href="{{catalog.distributor_id}}/d/products/catalog_view/{{catalog.uid}}">
                <div class="catalog_thumb">
                    <div class="catalog_thumb_image">
                        <span>demo - no image</span>
                    </div>
                </div>
                <div class="catalog_info">
                    <h2>{{distributors[catalog.distributor_id].name}} <span>{{catalog.products_count}}p</span></h2>
                    <p>{{catalog.name}}</p>
                </div>
            </a>

            </li>
        </ul>
    </div>
</div>

app.filter('distributorName', function() {
  return function(items, filterValue, distributors) {
      if (!filterValue){
          return items;
      }  
      var result = {};
        angular.forEach(items, function(value, key) {
            var distributor = distributors[value.distributor_id];
            if (distributor && distributor.name && distributor.name.toLowerCase().indexOf(filterValue.toLowerCase()) > -1){
                result[key] = value;
            }
        });
        return result;
    };
});

JSFiddle 与本地数据：http: //jsfiddle.net/alfrescian/p8zgp/

于 2013-07-16T10:43:43.593 回答
2

知道非常有帮助......这是alfrescian解决方案的更通用版本，通过子键过滤对象列表。

app.filter('objFilter', function() {
  return function(items, filter) {
      if (!filter){
          return items;
      }  
      var result = {};
        angular.forEach( filter, function(filterVal, filterKey) {
          angular.forEach(items, function(item, key) {
              var fieldVal = item[filterKey];
              if (fieldVal && fieldVal.toLowerCase().indexOf(filterVal.toLowerCase()) > -1){
                  result[key] = item;
              }
          });
        });
        return result;
    };
});

然后你可以有多个过滤器框，像这样

<input ng:model="filter.firstName"/>
<input ng:model="filter.lastName"/>
<input ng:model="filter.email"/>

你ng-repeat看起来像这样

<ul ng:repeat="cust in customers | objFilter: filter">
  <li>
    <a href="mailto:{{cust.email}}">{{cust.firstName}} {{cust.lastName}}</a>
  </li>
</ul>
于 2013-09-20T12:52:33.243 回答
1

您可以使用toArrayFilter将对象转换为数组，以便常规过滤器使用它。

在您的情况下，它将是：

<div ng-repeat="catalog in catalogs | toArray | filter:catalog_filter">
  {{ catalog.$key }} - {{ catalog.someProp }}
  <!-- code -->
</div>
于 2015-08-30T18:47:47.733 回答
1

有什么值得一提...

鉴于，这是一个极端案例，但我想我会分享。

你有一个数据结构；它需要是一个集合，但由于预期的增长、复杂性或其他限制，它需要非常扎实的基础知识和自己的方法。因此，您决定将此对象原型化为数组。

var OrdersDataModel = function OrdersDataModel(orders) {
    var thus = this;
    var orders = orders || [];

    function loadData(data) {
        this.splice.apply(this, [0, this.length].concat(data || orders));
        return this;
    }
    function serialize() {
        var serialized = JSON.stringify(this);
        return serialized;
    }
    function marshalData() {
        var marshalled = JSON.parse(this.serialize());
        return marshalled;
    }

    // export precepts
    this.load = loadData;
    this.serialize = serialize;
    this.marshalData = marshalData;

    return this;
};
OrdersDataModel.prototype = new Array();

这可能适合您的需求并在您的 - 中表现良好ng-repeat- 直到需要filter您的“阵列”：

<element ng-repeat="order in orders | filter:q" />

您的过滤器将失败（可能只是由于类型检查），您可能会浪费一点时间。

就我而言，可以通过修改我的serialize方法来轻松解决

var serialized = JSON.stringify(this);

- 到 - 

var serialized = JSON.stringify(this.slice(0));

不过，实现我的目标的更好方法是使用装饰器模式或构造器劫持来装饰数组：

代替：

OrdersDataModel.prototype = new Array();
...
this.orders = new OrdersDataModel();
this.orders.load(serverData);

- 采用 - 

this.orders = OrdersDataModel.apply([]);
this.orders.load(serverData);

其中很多可能看起来有点无关紧要，但我希望它（及其包含的模块/控制器）能够快速扩展，所以我尽可能多地坚持使用 SOLID 以保持其气密性。

希望这可以为您节省一些时间！

于 2015-09-03T04:42:32.603 回答
1

Angular 过滤器无法将对象的对象作为输入处理，但是，要解决您面临的问题，您可以将监视添加到 catalog_filter。如下： 

$scope.$watch('catalog_filter', function (value) {
        regex = new RegExp($scope.catalog_filter);
         if (!$scope.catalog_filter) return true;
         return regex.test(catalog.uid); /* can create multiple conditions based on the requirement*/
    });

执行此操作时，过滤器会作用于输入文本并在文本更改时进行过滤。

于 2016-06-22T05:45:48.540 回答