我有一个简单的问题。
我的模型看起来像这样:
public class AddEditChildProductModel
{
public string Name {get; set;}
public string Sku {get;set;}
........
public IEnumerable<AddEditPriceTierModel> PriceTiers {get;set;}
}
public class AddEditPriceTierModel
{
public int QtyStart {get;set;}
public int QtyEnd {get;set;}
........
}
我的问题是如何在同一视图中编辑集合?
看起来这很简单,也许我错过了什么。
谢谢!
的 的 ** **编辑
好的,所以我使用了EditorTemplates,但现在我收到以下错误:
The operation failed: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. When a change is made to a relationship, the related foreign-key property is set to a null value. If the foreign-key does not support null values, a new relationship must be defined, the foreign-key property must be assigned another non-null value, or the unrelated object must be deleted.
这是我的控制器动作:
public ActionResult EditChildProduct(AddEditChildProductModel model)
{
if (!ModelState.IsValid)
return PartialView("AddEditChildProduct", model);
ChildProduct childProduct = productService.GetChildProductByID(model.ID);
AutoMapper.Mapper.Map<AddEditChildProductModel, ChildProduct>(model, childProduct);
foreach (var tier in childProduct.PriceTiers)
{
tier.ChildProduct = childProduct;
}
UnitOfWork.Commit();
return ListChildProducts(model.ProductID);
}
不应该这样做,因为我得到ChildProduct
与相关的PriceTiers
集合,并使用AutoMapper来映射差异?我为PriceTier
上的PK和FK字段维护隐藏字段。
我有点困惑。
答案 0 :(得分:7)
您可以使用编辑器模板:
@model AddEditChildProductModel
@using (Html.BeginForm())
{
<div>
@Html.LabelFor(x => x.Name)
@Html.EditorFor(x => x.Name)
@Html.ValidationMessageFor(x => x.Name)
</div>
<div>
@Html.LabelFor(x => x.Sku)
@Html.EditorFor(x => x.Sku)
@Html.ValidationMessageFor(x => x.Sku)
</div>
<table>
<thead>
<tr>
<th>QtyStart</th>
<th>QtyEnd</th>
</tr>
</thead>
<tbody>
@Html.EditorFor(x => x.PriceTiers)
</tbody>
</table>
<input type="submit" value="OK">
}
然后定义将为PriceTiers
列表(~/Views/Shared/EditorTemplates/AddEditPriceTierModel.cshtml
)的每个元素呈现的编辑器模板 - 编辑器模板的名称和位置很重要。如果编辑器模板仅适用于给定的控制器,您也可以将其放在~/Views/SomeController/EditorTemplates/AddEditPriceTierModel.cshtml
中:
@model AddEditPriceTierModel
<tr>
<td>
@Html.LabelFor(x => x.QtyStart)
@Html.EditorFor(x => x.QtyStart)
@Html.ValidationMessageFor(x => x.QtyStart)
</td>
<td>
@Html.LabelFor(x => x.QtyEnd)
@Html.EditorFor(x => x.QtyEnd)
@Html.ValidationMessageFor(x => x.QtyEnd)
</td>
</tr>
现在您的POST控制器操作签名将如下所示:
[HttpPost]
public ActionResult Edit(AddEditChildProductModel model)
{
...
}
答案 1 :(得分:6)
您可以在Phil Haack's article "Model Binding To A List"中查看有关将实体的集合绑定到视图的有用信息。
@for (int i = 0; i < Model.MyCollection.Count; i++)
{
@Html.TextBoxFor(m => m[i].Title)
@Html.TextBoxFor(m => m[i].Author)
@Html.TextBoxFor(m => m[i].DatePublished)
}
public ActionResult UpdateStuff(MyViewModel vm)
{
}
答案 2 :(得分:1)
您也可以在http://blog.stevensanderson.com/2010/01/28/validating-a-variable-length-list-aspnet-mvc-2-style/找到Steven Sanderson提供的解决方案。帮助了我很多。