如何在 AngularJs 中使用 ng-repeat 过滤(键、值)? [英] How to filter (key, value) with ng-repeat in AngularJs?

问题描述

我正在尝试做类似的事情:

<div ng-repeat="(k,v) in items | filter:hasSecurityId">{{k}} {{v.pos}}

AngularJs 部分:

function TestCtrl($scope){$scope.items = {'A2F0C7':{'secId':'12345', 'pos':'a20'},'C8B3D1':{'pos':'b10'}};$scope.hasSecurityId = function(k,v){返回 v.hasOwnProperty('secId');}}

但不知何故，它向我展示了所有项目.如何过滤 (key,value) ?

解决方案

Angular filters 只能是应用于数组而不是对象，来自 angular 的 API -

<块引用>

从数组中选择项目的子集并将其作为新数组返回."

这里有两个选择:
1) 将 $scope.items 移动到数组或 -
2) 预过滤 ng-repeat 项，如下所示:

{{k}} {{v.pos}}

在控制器上:

$scope.filterSecId = function(items) {变量结果 = {};angular.forEach(items, function(value, key) {如果 (!value.hasOwnProperty('secId')) {结果[键] = 值；}});返回结果；}

jsfiddle:http://jsfiddle.net/bmleite/WA2BE/

I am trying to do something like :

<div ng-controller="TestCtrl">
    <div ng-repeat="(k,v) in items | filter:hasSecurityId">
        {{k}} {{v.pos}}
    </div>
</div>

AngularJs Part:

function TestCtrl($scope) 
{
    $scope.items = {
                     'A2F0C7':{'secId':'12345', 'pos':'a20'},
                     'C8B3D1':{'pos':'b10'}
                   };

    $scope.hasSecurityId = function(k,v)
    {
       return v.hasOwnProperty('secId');
    }
}

But somehow, it is showing me all items. How can I filter on (key,value) ?

解决方案

Angular filters can only be applied to arrays and not objects, from angular's API -

"Selects a subset of items from array and returns it as a new array."

You have two options here:
1) move $scope.items to an array or -
2) pre-filter the ng-repeat items, like this:

<div ng-repeat="(k,v) in filterSecId(items)">
    {{k}} {{v.pos}}
</div>

And on the Controller:

$scope.filterSecId = function(items) {
    var result = {};
    angular.forEach(items, function(value, key) {
        if (!value.hasOwnProperty('secId')) {
            result[key] = value;
        }
    });
    return result;
}

jsfiddle: http://jsfiddle.net/bmleite/WA2BE/

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