Knockout.js 敲除绑定自身上的一对多关系（敲除中的递归）

所以在我的数据库中，我有一个模型，它与自身有一对多的关系。一个很好的例子是reddit上的评论系统

我目前正在做这样的事情：

<div class="body" data-bind="foreach: { data: Comments}">
    <span data-bind="text: '(' + OrderQualifier + ') ' + Text"></span>
    <!-- ko foreach: { data: Children } -->
        <span data-bind="text: '(' + OrderQualifier + ') ' + Text"></span> 
    <!-- /ko -->
</div>

---

正如您所见，这包含3个级别的子注释，但我需要能够处理未知数量的子注释。

淘汰模板支持递归

---

您可以为此使用模板

<div class="body" data-bind="foreach: comments">
    <div data-bind="template: { name: 'childTemplate', data: $data }"></div>
</div>

<script type="text/html" id="childTemplate">
    <span data-bind="text:comment"></span>
    <!-- ko if: $data.childrenLength > 0 -->
        <!-- ko foreach: children -->
            <div data-bind="template: { name: 'childTemplate', data: $data }" style="padding-left:35px;"></div>
        <!-- /ko -->
    <!-- /ko -->
</script>

---

如果你发布一些样本数据，最好仔细阅读一下，这正是我要做的

<div class="body" data-bind="foreach: Comments">
    <div data-bind="template: { name: 'childTemplate', data: $data }"></div>
</div>

<script type="text/html" id="childTemplate">
    <span data-bind="text: '(' + OrderQualifier + ') ' + Text"></span>
    <!-- ko if: $data.Children -->
        <!-- ko foreach: Children -->
            <div data-bind="template: { name: 'childTemplate', data: $data }"></div>
        <!-- /ko -->
    <!-- /ko -->
</script>

<div class="body" data-bind="foreach: comments">
    <div data-bind="template: { name: 'childTemplate', data: $data }"></div>
</div>

<script type="text/html" id="childTemplate">
    <span data-bind="text:comment"></span>
    <!-- ko if: $data.childrenLength > 0 -->
        <!-- ko foreach: children -->
            <div data-bind="template: { name: 'childTemplate', data: $data }" style="padding-left:35px;"></div>
        <!-- /ko -->
    <!-- /ko -->
</script>

var comments = [{
    id: 1,
    comment: 'How can i use knockoutjs?',
    childrenLength: 3,
    children: [{
        id: 2,
        comment: 'Please seach before asking',
        childrenLength: 0,
        children: []
    }, {
        id: 3,
        comment: 'Please read the documentation',
        childrenLength: 0,
        children: []
    }, {
        id: 4,
        comment: 'You can see the blog posts on this',
        childrenLength: 2,
        children: [{
            id: 5,
            comment: 'Please seach before asking',
            childrenLength: 0,
            children: []
        }, {
            id: 6,
            comment: 'Please seach before asking',
            childrenLength: 0,
            children: []
        }]
    }]
}, {
    id: 7,
    comment: 'You question is not sufficient to be asked here?',
    childrenLength: 3,
    children: [{
        id: 8,
        comment: 'Please seach before asking',
        childrenLength: 0,
        children: []
    }, {
        id: 9,
        comment: 'Please read the documentation',
        childrenLength: 0,
        children: []
    }, {
        id: 10,
        comment: 'You can see the blog posts on this',
        childrenLength: 0,
        children: []
    }]
}]

var vm = function(){
    var self = this
    self.comments = ko.observableArray(comments)
}

$('document').ready(function () {
    ko.applyBindings(new vm())
})