Angularjs 使用 orderBy 排序对我不起作用

Question

我正在尝试根据收视率、价格和总数对我的房源列表进行排序。不幸的是不为我工作，我是 angularjs 的新人。这里有我的 html 代码。实际上它是对事物进行排序但不是按顺序排列。 -> 当用户点击价格 btn 时，他应该首先以最高价格回家，然后是最低价格，最低价格等（5000,4000,3000）如果他再次点击那么订单必须是（3000,4000,5000）。总计数和评级类似。我还创建了 plunker 来编辑您的建议。请编辑并向我提供工作 link。这里是demoForEdit.

//html code
<body ng-controller="MainCtrl as ctrl">
    <div class="col-md-offset-2">
      <button ng-click="orderByPopularity='total_counts'; reverseSort = !reverseSort" class="btn btn-sm btn-info">sort on total counts </button>
      <button  ng-click="orderByPopularity='price'; reverseSort = !reverseSort" class="btn btn-sm btn-danger">sort on Price</button>    
      <button  ng-click="orderByPopularity='avg'; reverseSort = !reverseSort" class="btn btn-sm btn-success">sort on ratings</button>    
    </div>
  <br>
<div ng-repeat="home in homes | orderBy:orderByPopularity:reverseSort">
  <div class="panel panel-primary  ">
    <div class="panel-heading">
      Home name: {{home.home_name}}
    </div>
      <div class="panel-body">
        <div class="panel panel-body">
          <table>
          <p>total counts:{{home.total_counts}}</p>
          <p>city:{{home.city}}</p>
          <p>Price:{{home.price}}</p>
          <div ng-repeat="rate in rating">
          <!--  looping inside ng-repeat rating is seprate data but has home id-->
            <div ng-if="rate.home_id==home.id">
            Home raintgs:{{rate.avg}}  
          </div>
        </div>
      </div>
    </div>
  </div>  
</div>

//My app.js code
var app = angular.module('plunker', []);
    app.controller('MainCtrl', function($scope) {
      $scope.homes=[{"id":"48","home_name":"Swastik","city":"Banglore","zipcode":"888888","total_counts":"1","price":"5000"},
    {"id":"49","home_name":"Khushboo","city":"Chennai","zipcode":"456786","total_counts":"17","price":"3333"},
    {"id":"50","home_name":"Raj","city":"Hydrabad","zipcode":"123455","total_counts":"2","price":"20000"}];
    $scope.orderByPopularity ='total_counts';
    $scope.reverseSort = true;
    $scope.rating=[{"home_id":"48","avg":"3.5"},
    {"home_id":"49","avg":"2"},
    {"home_id":"50","avg":"4"}
    ];
    });

Answer 1

它会排序，但您的 total_counts 值是字符串，因此它会按字典顺序对它们进行排序。如果你想按数字排序，我假设你这样做，你需要删除引号并将它们的值作为数字本身，即："total_counts":17 等..

编辑：修改后您可以将您的值保留为字符串（在自定义排序函数内）。

至于 avg 评级排序，您不能这样做，因为您的排序是在 $scope.homes 上进行的，并且此数组的对象没有 avg 属性，那是你的另一个数组的属性 - $scope.ratings。要按属性排序，您必须创建自己的自定义函数。

$scope.myValueFunction = function(o) {

   if ($scope.orderByPopularity == "avg") {
     var obj;
     for (var i = 0; i < $scope.rating.length; i++) { 
        if ($scope.rating[i].home_id == o.id) {
          obj = $scope.rating[i]
        }
     }
     return obj.avg;
   }
   else  {
     return parseInt(o[$scope.orderByPopularity]); 
   }

};

并且在 HTML 中：

<div ng-repeat="home in homes | orderBy:myValueFunction:reverseSort">

看看这个Plunker作为演示。

Angularjs 使用 orderBy 排序对我不起作用

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