当 ajax 调用更改其值时，AngularJS 中的 ng-repeat 列表不会更新 [英] ng-repeat list in AngularJS isn't updated when an ajax call changing its value

问题描述

我完全糊涂了.当 ajax 调用更改其值时，为什么我的 ng-repeat 不刷新?我在这里看到了很多 Q&As，但没有一个谈到 ajax 调用.

HTML:

<div id="treeview" class="col-xs-4 col-sm-4 col-md-4 col-lg-4"><ul><li ng-repeat="root in rootEntry">{{root.Name}}</li>

JS:

function EntryCtrl ($scope, $http) {$scope.rootEntry = [];$http.get('read/root').success(function(root) {$scope.rootEntry = 根；控制台日志($scope.rootEntry)；});}

并且控制台确实记录了服务器返回的数组.但是 html 中的列表从未更新过.如果我使用 $scope.$apply，则会发生关于 $digest 的错误.

控制台输出

[对象]0:对象属性:空编号:534580464aac494e24000001"名称:注册表"小路: ""__proto__:对象长度:1__proto__:数组[0]

所以这是服务器返回的 root 结构.会不会是数据类型的问题?因为它是Object 而不是Array.我使用 Golang 作为服务器并使用 json.Marshal() 来打包来自 MongoDB 的数据.

更新

function EntryCtrl ($scope, $http) {$scope.rootEntry = [];$http.get('read/root').success(function(root) {$scope.rootEntry = 根；控制台日志($scope.rootEntry)；});控制台日志($scope.rootEntry)；}

后面的输出是[].可能是$http async造成的，会是这个原因吗?

决赛

我知道为什么.我使用了一个叫做jsTree的插件，它会对节点做一些装饰，所以我插入的节点会被覆盖.

谢谢大家.

解决方案

我已经测试了你的代码，正如 tymeJV 所说，你的实现没有问题，我建议检查控制台窗口是否有一些可能的错误.

>

示例:

function EntryCtrl ($scope, $http) {$scope.rootEntry = [];$http.get('https://api.github.com/users/mralexgray/repos').success(function(root) {$scope.rootEntry = 根；控制台日志($scope.rootEntry)；});}

现场示例:http://plnkr.co/edit/Grlgfob6tjE63JizWdCD?p=preview

I'm totally confused. Why doesn't my ng-repeat refresh when there's an ajax call changing its value? I've seen many Q&As here, but none of them talked about ajax call.

HTML:

<div class="row" ng-controller="EntryCtrl">
    <div id="treeview" class="col-xs-4 col-sm-4 col-md-4 col-lg-4">
        <ul>
            <li ng-repeat="root in rootEntry">{{root.Name}}</li>
        </ul>
    </div>
</div>

JS:

function EntryCtrl ($scope, $http) {
    $scope.rootEntry = [];
    $http.get('read/root').success(function(root) {
        $scope.rootEntry = root;
        console.log($scope.rootEntry);
    });
}

And the console did log an array the server returned. But the list in html never got updated. If I used $scope.$apply, an error concerning $digest would happen.

Console Output

[Object]
    0: Object
        Attributes: null
        Id: "534580464aac494e24000001"
        Name: "Registry"
        Path: ""
        __proto__: Object
        length: 1
    __proto__: Array[0]

So it's the structure of root the server returns. Would it be the problem of data type? Because it's Object rather than Array. I use Golang as server and use json.Marshal() to pack the data from MongoDB.

Update

function EntryCtrl ($scope, $http) {
    $scope.rootEntry = [];
    $http.get('read/root').success(function(root) {
        $scope.rootEntry = root;
        console.log($scope.rootEntry);
    });
    console.log($scope.rootEntry);
}

The latter output is []. It's likely because of async of $http, so will it the reason?

Final

I know why. I used a plugin called jsTree, which will do some decorations with the node, so the node I inserted would be overwritten.

Thank you all.

解决方案

I've tested your code and as tymeJV said ,there is no problem with your implementation, i would suggest checking the console window for some possible errors.

Example:

function EntryCtrl ($scope, $http) {
    $scope.rootEntry = [];
    $http.get('https://api.github.com/users/mralexgray/repos').success(function(root) {
        $scope.rootEntry = root;
        console.log($scope.rootEntry);
    });
}   

Live example : http://plnkr.co/edit/Grlgfob6tjE63JizWdCD?p=preview

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