AngularJS: angular-filter: 如何对 2 列进行分组？

Question

我知道我可能听起来有点混乱，所以我请你让我详细说明一下

注意：此 post.

已附加一个有效的 POC（代码段）

我有一个包含 3 个属性的对象数组名字

姓名
团队
team_rank

 $scope.players = [
      {name: 'Gene', team: 'alpha', team_rank: 1},
      {name: 'George', team: 'beta', team_rank: 2},
      {name: 'Steve', team: 'gamma', team_rank: 3},
      {name: 'Paula', team: 'beta', team_rank: 2},
      {name: 'Scruath', team: 'gamma', team_rank: 3}
    ];

我通过运行 POC 得到了如下图所示的结果。

问题

我需要用球队名称来显示球队的排名。请建议我该怎么做？

<!DOCTYPE html>
<html ng-app="app">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
  <script src="//cdnjs.cloudflare.com/ajax/libs/angular-filter/0.4.7/angular-filter.js"></script>
  
<meta name="description" content="[groupBy example]"/>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
  <div ng-controller="MainController"> 
    
<ul ng-repeat="(key, value) in players | groupBy: 'team'">
  Group name: {{ key }}
  <li ng-repeat="player in value">
    player: {{ player.name }}
  </li>
</ul>
  </div>

<footer>
  <script>
angular.module('app',['angular.filter'])
  .controller('MainController', function($scope) { 
    $scope.players = [
      {name: 'Gene', team: 'alpha', team_rank: 1},
      {name: 'George', team: 'beta', team_rank: 2},
      {name: 'Steve', team: 'gamma', team_rank: 3},
      {name: 'Paula', team: 'beta', team_rank: 2},
      {name: 'Scruath', team: 'gamma', team_rank: 3}
    ];
 });
  </script>
</footer>
</body>
</html>

Answer 1

如果您确定每个玩家都有 team_rank 属性，您可以这样做：

Group name: {{ key }} Rank: {{value[0].team_rank}}

<!DOCTYPE html>
<html ng-app="app">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
  <script src="//cdnjs.cloudflare.com/ajax/libs/angular-filter/0.4.7/angular-filter.js"></script>
  
<meta name="description" content="[groupBy example]"/>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
  <div ng-controller="MainController"> 
    
<ul ng-repeat="(key, value) in players | groupBy: 'team'">
  Group name: {{ key }} Rank: {{value[0].team_rank}}
  <li ng-repeat="player in value">
    player: {{ player.name }}
  </li>
</ul>
  </div>

<footer>
  <script>
angular.module('app',['angular.filter'])
  .controller('MainController', function($scope) { 
    $scope.players = [
      {name: 'Gene', team: 'alpha', team_rank: 1},
      {name: 'George', team: 'beta', team_rank: 2},
      {name: 'Steve', team: 'gamma', team_rank: 3},
      {name: 'Paula', team: 'beta', team_rank: 2},
      {name: 'Scruath', team: 'gamma', team_rank: 3}
    ];
 });
  </script>
</footer>
</body>
</html>

Answer 2

方法一：

<ul ng-repeat="(key, value) in players | groupBy: 'team'">
  Group name: {{ key }}, Rank: {{value[0].team_rank}}
  <li ng-repeat="player in value">
    player: {{ player.name }}
  </li>
</ul>

方法二：

<ul ng-repeat="(key, value) in players | groupBy: '[team,team_rank]'">
  Group, Rank : {{ key }}
  <li ng-repeat="player in value">
    player: {{ player.name }}
  </li>
</ul>

AngularJS: angular-filter: 如何对 2 列进行分组？

AngularJS: angular-filter: How to the group by with 2 columns?

javascript

angularjs

angular-filters