使用KnockoutJS Mapping插件和MVC创建一个基本的网格3

Question

我已经搜索了高低，并尝试了各种模式，但似乎我无法让它正常工作。有一次，我得到它的工作有很多代码，我认为必须有一个更简单的方法，现在它完全破碎。我的目标...了解如何使用KO Mapping和MVC来使这个网格加载的基础知识，并可能使用表单来更新它。我找不到任何适合我的情况的例子。我现在也是这样。

这里是我的操作：

public JsonResult List() 
    { 
     var result = new JsonResult(); 
     result.Data = _service.GetWeightStats(); 

     return Json(result, JsonRequestBehavior.AllowGet); 
    } 

这里是我的类：

public class WeightStat 
{ 
    public int Id { get; set; } 
    [Required] 
    public double Weight { get; set; } 
    public double? Neck { get; set; } 
    public double? Chest { get; set; } 
    public double? Bicept { get; set; } 
    public double? Waist { get; set; } 
    public double? Hip { get; set; } 
    public double? Thigh { get; set; } 
    public double? Calf { get; set; } 
    [Required] 
    public DateTime Date { get; set; } 
    [Required] 
    public string TimeOfDay { get; set; } 
    [Required] 
    public string DietBehavior { get; set; } 

} 

这里是我的模板行：

<tbody data-bind='template: {name: "statRowTemplate", foreach: data.Data }'></tbody> 

这里是我的模板：

<script id="statRowTemplate" type="text/html"> 
    <tr data-bind="attr: { id: Id }"> 
      <td><span data-bind="text: Date"></span></td> 
      <td><span data-bind="text: TimeOfDay"></span></td> 
      <td><span data-bind="text: DietBehavior"></span></td> 
      <td><span data-bind="text: Weight"></span></td> 
      <td><span data-bind="text: Neck"></span></td> 
      <td><span data-bind="text: Chest"></span></td> 
      <td><span data-bind="text: Bicept"></span></td> 
      <td><span data-bind="text: Waist"></span></td> 
      <td><span data-bind="text: Hip"></span></td> 
      <td><span data-bind="text: Thigh"></span></td> 
      <td><span data-bind="text: Calf"></span></td> 
    </tr> 
</script> 

这里是我的KO JS：

<script type="text/javascript"> 

var data = $.getJSON('WeightTracker/List'); 

var viewModel = ko.mapping.fromJSON(data); 

ko.mapping.updateFromJSON(viewModel, data); 

ko.applyBindings(viewModel); 

JSON获得从动作回：

{"ContentEncoding":null,"ContentType":null,"Data":[{"Id":1,"Weight":195.3,"Neck":10.3,"Chest":34.6,"Bicept":13.2,"Waist":34,"Hip":34,"Thigh":16.4,"Calf":8.8,"Date":"\/Date(1302554017067)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":2,"Weight":194.3,"Neck":10.157142857142858,"Chest":34.4,"Bicept":13,"Waist":33.5,"Hip":33.5,"Thigh":16.2,"Calf":8.6000000000000014,"Date":"\/Date(1302640417070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":3,"Weight":193.3,"Neck":10.014285714285714,"Chest":34.2,"Bicept":12.799999999999999,"Waist":33,"Hip":33,"Thigh":15.999999999999998,"Calf":8.4,"Date":"\/Date(1302726817070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":4,"Weight":192.3,"Neck":9.8714285714285719,"Chest":34,"Bicept":12.6,"Waist":32.5,"Hip":32.5,"Thigh":15.799999999999999,"Calf":8.2000000000000011,"Date":"\/Date(1302813217070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":5,"Weight":191.3,"Neck":9.72857142857143,"Chest":33.800000000000004,"Bicept":12.399999999999999,"Waist":32,"Hip":32,"Thigh":15.599999999999998,"Calf":8,"Date":"\/Date(1302899617070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":6,"Weight":190.3,"Neck":9.5857142857142872,"Chest":33.6,"Bicept":12.2,"Waist":31.5,"Hip":31.5,"Thigh":15.399999999999999,"Calf":7.8000000000000007,"Date":"\/Date(1302986017070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":7,"Weight":189.3,"Neck":9.4428571428571431,"Chest":33.4,"Bicept":12,"Waist":31,"Hip":31,"Thigh":15.2,"Calf":7.6000000000000005,"Date":"\/Date(1303072417070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":8,"Weight":188.3,"Neck":9.3,"Chest":33.2,"Bicept":11.799999999999999,"Waist":30.5,"Hip":30.5,"Thigh":14.999999999999998,"Calf":7.4,"Date":"\/Date(1303158817070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":9,"Weight":187.3,"Neck":9.1571428571428584,"Chest":33,"Bicept":11.6,"Waist":30,"Hip":30,"Thigh":14.799999999999999,"Calf":7.2000000000000011,"Date":"\/Date(1303245217070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":10,"Weight":186.3,"Neck":9.0142857142857142,"Chest":32.800000000000004,"Bicept":11.399999999999999,"Waist":29.5,"Hip":29.5,"Thigh":14.599999999999998,"Calf":7.0000000000000009,"Date":"\/Date(1303331617070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":11,"Weight":185.3,"Neck":8.8714285714285719,"Chest":32.6,"Bicept":11.2,"Waist":29,"Hip":29,"Thigh":14.399999999999999,"Calf":6.8000000000000007,"Date":"\/Date(1303418017070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":12,"Weight":184.3,"Neck":8.72857142857143,"Chest":32.4,"Bicept":11,"Waist":28.5,"Hip":28.5,"Thigh":14.2,"Calf":6.6000000000000005,"Date":"\/Date(1303504417070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":13,"Weight":183.3,"Neck":8.5857142857142872,"Chest":32.2,"Bicept":10.799999999999999,"Waist":28,"Hip":28,"Thigh":13.999999999999998,"Calf":6.4,"Date":"\/Date(1303590817070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":14,"Weight":182.3,"Neck":8.4428571428571431,"Chest":32,"Bicept":10.6,"Waist":27.5,"Hip":27.5,"Thigh":13.799999999999999,"Calf":6.2000000000000011,"Date":"\/Date(1303677217070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":15,"Weight":181.3,"Neck":8.3,"Chest":31.8,"Bicept":10.399999999999999,"Waist":27,"Hip":27,"Thigh":13.599999999999998,"Calf":6.0000000000000009,"Date":"\/Date(1303763617070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":16,"Weight":180.3,"Neck":8.1571428571428584,"Chest":31.6,"Bicept":10.2,"Waist":26.5,"Hip":26.5,"Thigh":13.399999999999999,"Calf":5.8000000000000007,"Date":"\/Date(1303850017070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":17,"Weight":179.3,"Neck":8.014285714285716,"Chest":31.400000000000002,"Bicept":10,"Waist":26,"Hip":26,"Thigh":13.2,"Calf":5.6000000000000005,"Date":"\/Date(1303936417070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":18,"Weight":178.3,"Neck":7.8714285714285719,"Chest":31.200000000000003,"Bicept":9.7999999999999989,"Waist":25.5,"Hip":25.5,"Thigh":12.999999999999998,"Calf":5.4,"Date":"\/Date(1304022817070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":19,"Weight":177.3,"Neck":7.7285714285714295,"Chest":31,"Bicept":9.6,"Waist":25,"Hip":25,"Thigh":12.799999999999999,"Calf":5.2000000000000011,"Date":"\/Date(1304109217070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"},{"Id":20,"Weight":176.3,"Neck":7.5857142857142863,"Chest":30.8,"Bicept":9.3999999999999986,"Waist":24.5,"Hip":24.5,"Thigh":12.599999999999998,"Calf":5.0000000000000009,"Date":"\/Date(1304195617070)\/","TimeOfDay":"Morning","DietBehavior":"Moderately"}],"JsonRequestBehavior":1} 

我现在假设我是完全错误的，此代码，因为我不recieving什么但是JSON字符串。我已经用很多不同的方式修改了代码，并且我一直在为此工作了2个多星期，试图让这个工作起作用，所以如果有人能够向我解释我做错了什么，可能将我发送给knockoutjs网站的例子没有有帮助。预先感谢您的帮助，使我不再生长更多的白发：/

PS。也添加到这个也..我想利用这个mvcextension一个朋友创建了我已经工作，但我不得不这样做data.WeightStats或东西..很沮丧：/检查出来

public static MvcHtmlString KnockoutForModel<TModel>(this AjaxHelper<TModel> helper, bool includeScriptTags = true, bool? applyKoBindings = null) 
    { 
     var serializer = new JavaScriptSerializer(); 

     var json = "var viewModel = ko.mapping.fromJS(" + serializer.Serialize(helper.ViewData.Model) + ");\r\n"; 

     if (applyKoBindings.GetValueOrDefault(includeScriptTags)) 
     { 
      json += "ko.applyBindings(viewModel);\r\n"; 
     } 

     if (includeScriptTags) 
     { 
      json = "<script type=\"text/javascript\">\r\n" + json + "</script>\r\n"; 
     } 

     return MvcHtmlString.Create(json); 
    } 

Answer 1

$ .getJSON要求您传递回调来处理结果，因为请求是异步完成的。所以，你会想要做的事，如：

var viewModel = {}; 

$.getJSON('WeightTracker/List', function(result) { 
    viewModel.stats = ko.mapping.fromJS(result.Data); 
    ko.applyBindings(viewModel); 
}); 

然后，您的模板上面基础上结合会是什么样子：

<tbody data-bind='template: {name: "statRowTemplate", foreach: stats }'></tbody> 

所以，当你做$ .getJSON，在回调你会正在处理JavaScript对象而不是JSON字符串。

如果您有其他问题，我们很乐意帮助您。