具有多个值的AngularJS滤波器中继器

AngularJS filter repeater with multiple values

本文关键字：AngularJS 滤波器 中继器      更新时间：2023-09-26

我有一个中继器，我需要根据输入到文本字段的文本进行过滤，所以我已经完成了这个

<tr ng-repeat="i in filteredItems = (iso3166 | filter: {alpha_2: countryQuery})">

数据是对象的json数组，$scope.iso3166:

  [{
  "name": "Afghanistan",
  "alpha_2": "AF",
  "alpha_3": "AFG",
  "country-code": "004",
  "iso_3166-2": "ISO 3166-2:AF",
  "region": "Asia",
  "sub-region": "Southern Asia",
  "region-code": "142",
  "sub-region-code": "034",
  "license": "unclassified",
  "prohibited": "unclassified",
  "size": "unclassified"
}, ...

所以你可以键入"af"和表格过滤器来显示阿富汗。

现在，我需要让字段中键入的内容不仅与alpha_2键匹配，还与name键匹配。例如，"af"不仅应与"阿富汗"匹配，还应与"中非共和国"匹配。

我看了Angular 1.4.1文档，看到了逗号方法，但它似乎执行了and比较。如

<tr ng-repeat="i in filteredItems = (iso3166 | filter: {alpha_2: countryQuery, name: countryQuery })">

在这种情况下，有没有办法做一个"或"，这样无论键入什么，都会过滤到查询位于"alpha_2"或"name"中的任何项目？

更新：如果有人好奇，我最终使用了以下答案中建议的过滤器：

  $scope.countryFilter = function (value) {
    if (angular.isUndefined($scope.countryQuery) || $scope.countryQuery === '') {
      return true;
    }
    return value.name.indexOf($scope.countryQuery) >= 0 || value.alpha_2.indexOf($scope.countryQuery) >= 0;
  };

您可以指定一个函数的名称来过滤结果，然后在控制器中实现过滤逻辑，而不是这样做。

<tr ng-repeat="i in filteredItems = (iso3166 | filter: filterFn)">

控制器内：

scope.filterFn = function(item) {
    if(//item meets criteria) {
        //returning true will put the item into the ng-repeat data
        return true;
    }
    return false;
}

您可以将属性应用于ng重复筛选器，如下所示：

https://jsfiddle.net/pzek3tmy/

控制器

function Controller($scope) {
      var vm = this;
      vm.regions = [{
        "name": "Afghanistan",
        "alpha_2": "AF",
        "alpha_3": "AFG",
        "country-code": "004",
        "iso_3166-2": "ISO 3166-2:AF",
        "region": "Asia",
        "sub-region": "Southern Asia",
        "region-code": "142",
        "sub-region-code": "034",
        "license": "unclassified",
        "prohibited": "unclassified",
        "size": "unclassified"
      }, {
        "name": "Germany",
        "alpha_2": "GN",
        "alpha_3": "AFG",
        "country-code": "004",
        "iso_3166-2": "ISO 3166-2:AF",
        "region": "Asia",
        "sub-region": "Europe",
        "region-code": "143",
        "sub-region-code": "034",
        "license": "unclassified",
        "prohibited": "unclassified",
        "size": "unclassified"
      }];
    }

HTML

<div ng-controller="Controller as ctrl">
  <input type="text" ng-model="region_filter">
  <ul>
    <li ng-repeat="region in ctrl.regions | filter:{'alpha_2':region_filter} | filter:{'name':region_filter}">{{region.name}}       </li>
  </ul>
</div>
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