POST 数据空 model

Question

我有两个下拉列表的视图，首先是产品类别，第二个取决于选定的产品类别列表。 When click save button and ajax redirect to Post AddOrEditPartial in controller my model object has only autogenerated Id and CreateAt. 下拉列表和数量字段中的所有其他数据都是 null。我找不到问题出在哪里。 有人可以帮忙吗？

 public class Warehouse : BaseEntity
    {
        [Required(ErrorMessage = "Category Required")]
        public string IdCategory { get; set; }
        [Required(ErrorMessage = "Product Required")]
        public string IdProduct { get; set; }

        [Required(ErrorMessage = "Quantity required")]
        public int Quantity { get; set; }
    }

 public class WarehouseViewModel
    {
        public Warehouse Warehouse { get; set; }
        public IEnumerable<ProductCategory> ProductCategories1 { get; set; }

        public IEnumerable<Product> Products { get; set; }
    }

索引视图

 @using (Ajax.BeginForm("AddOrEditPartial", "Warehouse", new AjaxOptions() { HttpMethod = "POST", UpdateTargetId = "formsubmit", OnSuccess = "closePopUp(data)" }))
    {
        <div class="modal fade" id="myModal" role="dialog">
            <div class="modal-dialog modal-lg">
                <div class="modal-content">
                    <div class="modal-header">
                        <button type="button" class="close" data-dismiss="modal">&times;</button>
                        <h4 class="modal-title">Product</h4>
                    </div>
                    <div class="modal-body" id="modbody">
                        @Html.Partial("AddOrEditPartial")
                    </div>
                </div>
            </div>
        </div>
    }

部分视图

@model MyShop.Core.ViewModels.WarehouseViewModel

<div class="panel-group">
    <div class="panel-default">
        <div class="panel panel-success">
            <div class="panel-heading">Succes Implement Add/Edit Button</div>
            <div class="panel-body" id="panbody">
                <div class="col-sm-12">
                    @Html.AntiForgeryToken()

                    <div class="form-horizontal">
                        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                        @Html.HiddenFor(model => model.Warehouse.Id)

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.IdCategory, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.DropDownListFor(model => model.Warehouse.IdCategory, new SelectList(Model.ProductCategories1, "Category", "Category"), "Please select Category", new { @class = "form-control" })
                                @*@Html.DropDownListFor(model => model.Warehouse.Category, (IEnumerable<SelectListItem>)new SelectList(ViewBag.Cat, "Category", "Category"), "Please select Category", new { @class = "form-control" })*@

                            </div>
                        </div>

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.IdProduct, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.DropDownListFor(model => model.Warehouse.IdProduct, (IEnumerable<SelectListItem>)new SelectList(ViewBag.Prod, "Name", "Name"), "Please Select Product", new { @class = "form-control" })
                            </div>
                        </div>

                        <div class="form-group">
                            @Html.LabelFor(model => model.Warehouse.Quantity, htmlAttributes: new { @class = "control-label col-md-2" })
                            <div class="col-md-10">
                                @Html.EditorFor(model => model.Warehouse.Quantity, new { htmlAttributes = new { @class = "form-control" } })
                                @Html.ValidationMessageFor(model => model.Warehouse.Quantity, "", new { @class = "text-danger" })
                            </div>
                        </div>
                        <div class="form-group">
                            <div class="col-md-offset-2 col-md-10">
                                <input type="submit" value="Save" class="btn btn-success" id="btnSubmit" />
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<script src="~/Scripts/jquery-3.4.1.min.js"></script>
<script  type="text/javascript"> 
    $(document).ready(function () {
        $("#Warehouse_IdCategory").change(function () {
            var prodId = $(this).val();
            console.log(prodId);
            //debugger
            $.ajax({
                type: "GET",
                url: '@Url.Action("GetProductList", "Warehouse")/' +prodId,
                data: { prodId: prodId },
                contentType: "html",
                success: function (response) {
                    //debugger
                    $("#Warehouse_IdProduct").empty();
                    $("#Warehouse_IdProduct").append(response);
                }
            })
        })
    })

</script>

Controller

 public ActionResult Index()
        {
            WarehouseViewModel whViewModel = new WarehouseViewModel();
            whViewModel.Warehouse = new Warehouse();
            whViewModel.ProductCategories1 = productCategories.Collection();
            whViewModel.Products = contextProduct.Collection();
            return View(whViewModel);
        }
  [HttpPost]
        public ActionResult AddOrEditPartial(Warehouse wh)
        {
            if (!ModelState.IsValid)
            {
                return Json(new { success = false });

            }
            else
            {
                var data = context.Find(wh.Id);
                if (data != null)
                {
                    data.IdProduct = wh.IdProduct;
                    data.IdCategory = wh.IdCategory;
                    data.Quantity = wh.Quantity;
                    context.Commit();
                }
                else
                {

                    context.Insert(wh);
                    context.Commit();
                }

                return Json(new { success = true });
            }

        }

Answer 1

将您的 IdCategory 和 IdProduct 的类型更改为 int ，它应该可以工作。

public class Warehouse : BaseEntity
{
    [Required(ErrorMessage = "Category Required")]
    public int IdCategory { get; set; }
    [Required(ErrorMessage = "Product Required")]
    public int IdProduct { get; set; }

    [Required(ErrorMessage = "Quantity required")]
    public int Quantity { get; set; }
}

Answer 2

@UmairZafar

     public class ProductCategory : BaseEntity
    {
        [Required(ErrorMessage="Please fill category")]
        public string Category { get; set; }

    }
 
    public class Product : BaseEntity
    {
        [StringLength(20)]
        [DisplayName("Product Name")]
        [Required(ErrorMessage = "Please fill product name")]
        public string Name { get; set; }
        [DataType(DataType.MultilineText)]
        public string Description { get; set; }
        [Range(0,1000)]
        public decimal Price { get; set; }

        public string Category { get; set; }
        public string Image { get; set; }

    }
    
    public abstract class BaseEntity
    {
        public string Id { get; set; }
        public DateTimeOffset  CreatedAt { get; set; }

        public BaseEntity()
        {
            Id = Guid.NewGuid().ToString();
            CreatedAt = DateTime.Now;
        }
    }