以 json 形式返回部分视图？

Posted 2023-04-12

【中文标题】以 json 形式返回部分视图？

【英文标题】：return to partial view as json?

【发布时间】：2020-06-29 08:37:34

【问题描述】：

我有 2 个视图“索引”和“_Track”。我需要将我的数据列表返回到“_Track”——这是部分视图。有人可以帮我，因为我收到了这个错误。我需要将数据列表返回到部分视图中。

错误 "for each statement cannot operation on variable type does not contain a public instance definition for getenumerator"

请参阅下面的参考代码。

父模型。

 public class TrackingFormModel : BaseModel

    public string TrackingNumber  get; set; 
    public TrackingListModel TrackingList  get; set;  

儿童模型

public class TrackingListModel : BaseModel

    public string Name  get; set; 
    public string Departure  get; set; 

索引.cshtml

@using ChenvelMobile.Web.Models.Tracking
@model TrackingFormModel
@
ViewBag.Title = "index";
   Layout = null;

@using (Html.BeginForm("index", "tracking", FormMethod.Post))

@Html.HiddenFor(x => x.Id)
<div class="MainContainer">
    <div class="row">
        <div class="form-group">
            <div class="col-md-12">
                <h4>Track an Item</h4>
                <p>Hint: Enter the correct tracking number (Example. AU0002004)</p>
                <div class="input-group">
                    @Html.TextBoxFor(x => x.TrackingNumber, new  @class = "form-control", @id = "testSize", @placeholder = "Enter your box number..." )
                    <div class="input-group-btn">
                        <button class="btn btn-primary" type="submit" id="show">
                            <span class="glyphicon glyphicon-search btnSize" style="font-size: 20px"></span>
                        </button>
                    </div>
                </div>
                <br />
                @Html.Partial("_Track", Model)

            </div>
        </div>
    </div>
</div>

_Track.cshtml（部分视图）

@using ChenvelMobile.Web.Models.Tracking
@model TrackingListModel


@foreach (var item in Model)

<div>@item.Id</div>
<div>@item.Name</div>
<div>@item.Departure</div>

控制器

 public JsonResult Index(TrackingFormModel model)
    
        string date = String.Format("0:MM/dd/yyyy", DateTime.Now);
        DateTime startdate = DateTime.Parse(date);
        DateTime prevoiusdate = startdate.AddDays(-90);
        var tracking = _cSI_DataService.Find(x => x.reciept_id == model.TrackingNumber).Where(x => Convert.ToDateTime(x.date_pl) > prevoiusdate).ToList();

        var list = (from t in tracking
                    join d in _departureItemsTableService.GetAll() on t.box_id.Trim() equals d.BoxNo.Trim() into departitem from departitems in departitem.DefaultIfEmpty()
                    join dt in _departureTableService.GetAll() on departitems?.DepartureId equals dt.DepartureId into dep from depart in dep.DefaultIfEmpty()

                    select new TrackingListModel
                     
                        Id = t.Id,
                        Name = t.firstname_s + " " + t.lastname_s,
                        Departure = depart?.DepartureDate ?? String.Empty,
                    );

        return Json(new  data = list.ToList() , JsonRequestBehavior.AllowGet);
    

【参考方案1】：

尝试将跟踪列表传递给您的局部视图。目前您传递的是 TrackingFormModel，而不是预期的 TrackingListModel。

@Html.Partial("_Track", Model.TrackingList)