只显示“;没有结果”;在AngularJS中使用嵌套ng repeat时一次

Only show "No result" once when using nested ng-repeat in AngularJS

本文关键字：repeat ng 嵌套 一次 显示 结果 AngularJS      更新时间：2023-09-26

我的作用域有一个名为"ideas"的对象数组，格式如下：

{
   "id":1,
   "own":true,
   "ideas":[
      "one",
      "two",
      "three",
      "four",
      "five",
      "six",
      "seven",
      "eight",
      "nine",
      "ready"
   ]
}

我首先需要根据"自己"的属性进行筛选（自定义筛选包括接收）。然后，我希望最终结果只返回嵌套的"ideas"数组中的匹配项。

<div ng-repeat="idea in ideas | includeReceived:checked">
  <div ng-repeat="ideaText in filteredIdeas = (idea['ideas'] | filter:search)">
    {{ideaText}}
  </div>
  <div ng-hide="filteredIdeas.length">There is no result</div>
</div>

这样做效果很好，但我想在找不到任何结果时显示消息"没有结果"。上面的代码为外部ng重复的每次迭代显示此消息。非常感谢你的任何想法。

您可以将"搜索"过滤器附加到第一组结果，以剔除那些没有搜索到文本的结果。然后，Angular 1.3.0提供了对过滤结果进行别名的功能，因此您可以执行以下操作：

<div ng-repeat="idea in ideas | includeReceived:checked | filter: {ideas: search} as filteredIdeas">
  <div ng-repeat="ideaText in idea['ideas'] | filter:search">
    {{ideaText}}
  </div>
</div>
<div ng-if="filteredIdeas.length === 0">There is no result</div>

谢谢大家的投入。使用Angular 1.2.26中New Dev的方法，这段代码完成了任务：

<input type="checkbox" ng-model="checked" ng-init="checked=true">Include ideas you received<br/>
<div ng-controller="IdeaCtrl">
    <div ng-repeat="idea in filteredIdeas = (ideas | includeReceived:checked | filter:search)">
    <div ng-repeat="ideaText in idea['ideas'] | filter:search">
        {{ideaText}}
    </div>
  </div>
  <div ng-hide="filteredIdeas.length">There is no result</div>

您可以将消息放在ng repeat 之外

<div ng-hide="filteredIdeas.length">There is no result</div>
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