如何按对象的子级别过滤angular js中的列表

Question

我从服务器收到了一个类似这样的对象列表

[
    {id: 'a', checked :true,test:{sub:{var:4}}}, 
    {id: 'b', checked:true,test:{sub:{var:3}}},
    {id: 'c', checked:true,test:{sub:{var:2}}},
    {id: 'd', checked:true,test:{sub:{var:2}}},
    {id: 'e', checked:true,test:{sub:{var:3}}}
]

现在我想在"var"的基础上过滤这个列表。我正在做类似的事情：

    <div ng-controller="repeatCtrl">
   <div ng:repeat="o in list | filter: {test.sub.var : myPrecious.id}">
       {{o.id}}: 
       <input type="checkbox" ng:model="o.checked" />
       {{o.checked}}
    </div>
</div>

我的控制器代码是这样的

    var myApp = angular.module('myApp',[]);

myApp.controller('repeatCtrl', function($scope) {
    $scope.list = [
        {id: 'a', checked :true,test:{sub:{var:4}}}, 
        {id: 'b', checked:true,test:{sub:{var:3}}},
        {id: 'c', checked:true,test:{sub:{var:2}}},
        {id: 'd', checked:true,test:{sub:{var:2}}},
        {id: 'e', checked:true,test:{sub:{var:3}}}
    ];

    $scope.myPrecious = 2;
});

怎么了？

Answer 1

试试这个 solution. You can just specify {$ : myPrecious.id} at filter without worrying about hierarchy level, as said at docs.angularjs.org：可以使用 特殊属性名称（默认为 $）（例如 {$: "text"}）来接受匹配对象的任何属性或其嵌套对象属性 :

HTML:

<div ng-repeat="o in list | filter : {$ : myPrecious.id}">
    {{o.id}}
    <input type="checkbox" ng-model="o.checked" />
    {{o.checked}}
</div>

Javascript:

$scope.list = [
    {id: 'a', checked:true,test:{sub:{var:4}}}, 
    {id: 'b', checked:true,test:{sub:{var:3}}},
    {id: 'c', checked:true,test:{sub:{var:2}}},
    {id: 'd', checked:true,test:{sub:{var:2}}},
    {id: 'e', checked:true,test:{sub:{var:3}}}
];

$scope.myPrecious = {id:2};

如何按对象的子级别过滤angular js中的列表

How to filter a list in angular js by sublevels of object

angularjs

ng-filter