小编典典

AngularJS-使用ng-repeat创建无线电输入集

angularjs

我正在为将来的项目评估angularjs。我需要做的一件事情是通过选择适当的“页面”无线电输入来显示“频道”信息的不同页面。此外,还可以从一组“页面集”无线电输入中选择页面按钮的范围。

下面的工作示例具有一组32个通道,通过“设置”和“页面”无线电输入的组合选择了可见的通道组,总共提供2 * 4页,每个通道4个通道。

<!doctype html>
<html ng-app>
  <head>
    <script type="text/javascript" src="angular.js"></script>
    <script type="text/javascript">
      function Channels($scope) {
        $scope.groupSize = 4;
        $scope.pageSet = 0;
        $scope.pageNumber = 0;
        $scope.channels = [
          {"id": "Ch-001"}, {"id": "Ch-002"}, {"id": "Ch-003"}, {"id": "Ch-004"},
          {"id": "Ch-005"}, {"id": "Ch-006"}, {"id": "Ch-007"}, {"id": "Ch-008"},
          {"id": "Ch-009"}, {"id": "Ch-010"}, {"id": "Ch-011"}, {"id": "Ch-012"},
          {"id": "Ch-013"}, {"id": "Ch-014"}, {"id": "Ch-015"}, {"id": "Ch-016"},
          {"id": "Ch-017"}, {"id": "Ch-018"}, {"id": "Ch-019"}, {"id": "Ch-020"},
          {"id": "Ch-021"}, {"id": "Ch-022"}, {"id": "Ch-023"}, {"id": "Ch-024"},
          {"id": "Ch-025"}, {"id": "Ch-026"}, {"id": "Ch-027"}, {"id": "Ch-028"},
          {"id": "Ch-029"}, {"id": "Ch-030"}, {"id": "Ch-031"}, {"id": "Ch-032"}
        ];
      }
    </script>
  </head>

  <body ng-controller="Channels">
    <p>Set:
      <input type="radio" name="pageSet" ng-model="pageSet" ng-value="0">1-4</input>
      <input type="radio" name="pageSet" ng-model="pageSet" ng-value="1">5-8</input>
    </p>
    <p>Page:
      <input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="0">{{pageSet * groupSize + 1}}</input>
      <input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="1">{{pageSet * groupSize + 2}}</input>
      <input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="2">{{pageSet * groupSize + 3}}</input>
      <input type="radio" name="pageNumber" ng-model="pageNumber" ng-value="3">{{pageSet * groupSize + 4}}</input>
    </p>
    <ul>
      <li ng-repeat="channel in channels | limitTo: groupSize * ((groupSize * pageSet) + pageNumber + 1) | limitTo: -groupSize">
        <p>{{channel.id}}</p>
      </li>
    </ul>
  </body>
</html>

我的问题是如何使用创建页面/页面集单选输入ng-repeat。我已经尝试过以下方法:

<p>Set: <input ng-repeat="n in [0,1]" type="radio" name="pageSet" ng-model="pageSet" ng-value="{{n}}"></p>
<p>Page: <input ng-repeat="n in [0,1,2,3]" type="radio" name="pageNumber" ng-model="pageNumber" ng-value="{{n}}"></p>

看起来正确,但是值未绑定到相应的pageSet / pageNumber变量。谁能告诉我我在这里想念的东西吗?


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2020-07-04

共1个答案

小编典典

ng-repeat创建一个子作用域,因此您必须绑定到$ parent:

这是一个小提琴:http :
//jsfiddle.net/g/r9MLe/2/

样品:

  <p>Set:
         <label ng-repeat="n in [0,1]">
       <input type="radio" name="pageSet" ng-model="$parent.pageSet" ng-value="n" />{{n}}
         </label>
     </p>
     <p>Page: 
         <label ng-repeat="n in [0,1,2,3]">
         <input type="radio" name="pageNumber" ng-model="$parent.pageNumber" ng-value="n" /> {{n}}
         </label>
     </p>
2020-07-04