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问题描述
我正在使用MVC 5 / EF 6.1处理带有父母（一对多））关系的表单。
我试图通过部分视图呈现孩子，不会渲染或给我任何错误（在创建一个新的表单）。
我尝试运行调试器，我没有看到任何错误（我确定有）。
到目前为止，这是我所拥有的： / p>
模型
public class Parent
{
public int ParentID {get;组; }
public string FirstName {get;组; }
public string LastName {get;组; }
public virtual ICollection< Child>孩子{get;组; }
}
public class Child
{
public int ChildID {get;组; }
public int ParentID {get;组; }
public string Name {get;组; }
public string DOB {get;组; }
public string Address {get;组; }
public virtual Parent Parent {get;组; }
}
ViewModels
public class ParentVM
{
public ParentVM（）
{
// Children = new List< ChildVM>（）
// {
// new ChildVM（）{Name =1，DOB =1，Address =1}，
// new ChildVM（）{Name = 1，DOB =1，Address =1}，
// new ChildVM（）{Name =1，DOB =1，Address =1}，
//};
Children = new List< ChildVM>（）;
}
public int ParentID {get;组; }
public int ChildID {get;组; }
public string FirstName {get;组; }
public string LastName {get;组; }
public string Name {get;组; }
public string DOB {get;组; }
public string Address {get;组; }
public IList< ChildVM>孩子{get;组; }
}
public class ChildVM
{
public int ChildID {get;组; }
public int ParentID {get;组; }
public string Name {get;组; }
public string DOB {get;组; }
public string Address {get;组; }
}
查看（通过脚手架创建：索引，详细信息，编辑，创建，删除）
@model SomeNamespace.ViewModels.ParentVM
@ {ViewBag.Title =Create;}
< h2>创建< / h2>
@using（Html.BeginForm（））
{
@ Html.AntiForgeryToken（）
< div class =form-horizontal >
< h4>父< / h4>
< hr />
@ Html.ValidationSummary（true，，new {@class =text-danger}）
< div class =form-group>
@ Html.LabelFor（model => model.FirstName，htmlAttributes：new {@class =control-label col-md-2}）
< div class =col-md- 10\" >
@ Html.EditorFor（model => model.FirstName，new {htmlAttributes = new {@class =form-control}}）
@ Html.ValidationMessageFor（model => model.FirstName ，，新的{@class =text-danger}）
< / div>
< / div>
< div class =form-group>
@ Html.LabelFor（model => model.LastName，htmlAttributes：new {@class =control-label col-md-2}）
< div class =col-md- 10\" >
@ Html.EditorFor（model => model.LastName，new {htmlAttributes = new {@class =form-control}}）
@ Html.ValidationMessageFor（model => model.LastName ，，新的{@class =text-danger}）
< / div>
< / div>
< table border =1>
< tr>
< th> Name< / th>
DOB< / th>
< th>地址< / th>
< / tr>
@ Html.EditorFor（x => x.Children）
< / table>
< div class =form-group>
< div class =col-md-offset-2 col-md-10>
< input type =submitvalue =Createclass =btn btn-default/>
< / div>
< / div>
< / div>}
< div> @ Html.ActionLink（返回列表，索引）< / div>
@section脚本{
@ Scripts.Render（〜/ bundles / jqueryval）}
部分视图（Views / Shared / EditorTemplates / Child.cshtml）
@model SomeNamespace.Models.Child
< tr>
< td>
@ Html.EditorFor（model => model.Name）
< / td>
< td>
@ Html.EditorFor（model => model.DOB）
< / td>
< td>
@ Html.EditorFor（model => model.Address）
< / td>
Controller（ParentsController.cs）
// GET：Parents / Create
public ActionResult Create（）
{
// var viewModel = new ParentVM
// {
// Children =
// new List< ChildVM>（）
// {
/ / new ChildVM（）{Name =1，DOB =1，Address =1}，
//新的ChildVM（）{Name =1，DOB =1 1}，
// new ChildVM（）{Name =1，DOB =1，Address =1}
//}
//};
return View（new ParentVM（））;
// return View（viewModel）;
}
// POST：父母/创建
//为了防止过多的攻击，请启用要绑定的特定属性，对于
//更多详细信息，请参见http://go.microsoft.com/fwlink/?LinkId=317598。
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create（[Bind（Include =ParentID，FirstName，LastName，Name）] ParentVM viewModel）
{
if（ModelState.IsValid）
{
var child = new Child（）
{
// Name = viewModel.Name，
// DOB = viewModel.DOB，
// Address = viewModel.Address
};
var parent = new Parent（）
{
// FirstName = viewModel.FirstName，
// LastName = viewModel.LastName
};
db.Parents.Add（parent）;
db.Childs.Add（child）;
db.SaveChanges（）;
return RedirectToAction（Index）;
}
return View（viewModel）;
}
这是我在视图源中看到的：
< table border =1>
< tr>
< th> Name< / th>
DOB< / th>
< th>地址< / th>
< / tr>
< / table>
也许它不喜欢类型？我以为你可以在部分视图中使用模型（editorTemplates）？
解决方案
你 ParentVM 类包含一个属性 public IList< ChildVM>孩子{get;组; } ，但您的 EditorTemplate 用于 @model SomeNamespace.Models.Child 。将其更改为
@model SomeNamespace.Models.ChildVM
并重命名您的 EditorTemplate 以匹配
I am working on a form with a parent child (one to many) relationship using MVC 5 / EF 6.1.I am trying to render the childs via a partial view that will not render or give me any errors (on creating a new form).I tried running the debugger and I did not see anything wrong (I'm sure there is though).
So far this is what I have:
Models
public class Parent
{
public int ParentID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public virtual ICollection<Child> Childs { get; set; }
}
public class Child
{
public int ChildID { get; set; }
public int ParentID { get; set; }
public string Name { get; set; }
public string DOB { get; set; }
public string Address { get; set; }
public virtual Parent Parent { get; set; }
}
ViewModels
public class ParentVM
{
public ParentVM()
{
//Children = new List<ChildVM>()
// {
// new ChildVM(){Name="1", DOB="1", Address="1"},
// new ChildVM(){Name="1", DOB="1", Address="1"},
// new ChildVM(){Name="1", DOB="1", Address="1"},
//};
Children = new List<ChildVM>();
}
public int ParentID { get; set; }
public int ChildID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Name { get; set; }
public string DOB { get; set; }
public string Address { get; set; }
public IList<ChildVM> Children { get; set; }
}
public class ChildVM
{
public int ChildID { get; set; }
public int ParentID { get; set; }
public string Name { get; set; }
public string DOB { get; set; }
public string Address { get; set; }
}
View (created via scaffolding: Index, Details, Edit, Create, Delete)
@model SomeNamespace.ViewModels.ParentVM
@{ViewBag.Title = "Create";}
<h2>Create</h2>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>Parent</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.FirstName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.FirstName, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.FirstName, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.LastName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.LastName, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.LastName, "", new { @class = "text-danger" })
</div>
</div>
<table border="1">
<tr>
<th>Name</th>
<th>DOB</th>
<th>Address</th>
</tr>
@Html.EditorFor(x => x.Children)
</table>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>}
<div>@Html.ActionLink("Back to List", "Index")</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")}
Partial View (Views/Shared/EditorTemplates/Child.cshtml)
@model SomeNamespace.Models.Child
<tr>
<td>
@Html.EditorFor(model => model.Name)
</td>
<td>
@Html.EditorFor(model => model.DOB)
</td>
<td>
@Html.EditorFor(model => model.Address)
</td>
Controller (ParentsController.cs)
// GET: Parents/Create
public ActionResult Create()
{
//var viewModel = new ParentVM
//{
// Children =
// new List<ChildVM>()
// {
// new ChildVM() {Name="1", DOB="1", Address="1"},
// new ChildVM() {Name="1", DOB="1", Address="1"},
// new ChildVM() {Name="1", DOB="1", Address="1"}
// }
//};
return View(new ParentVM());
//return View(viewModel);
}
// POST: Parents/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "ParentID,FirstName,LastName, Name")] ParentVM viewModel)
{
if (ModelState.IsValid)
{
var child = new Child()
{
//Name = viewModel.Name,
//DOB = viewModel.DOB,
//Address = viewModel.Address
};
var parent = new Parent()
{
//FirstName = viewModel.FirstName,
//LastName = viewModel.LastName
};
db.Parents.Add(parent);
db.Childs.Add(child);
db.SaveChanges();
return RedirectToAction("Index");
}
return View(viewModel);
}
This is what I see in the view source:
<table border="1">
<tr>
<th>Name</th>
<th>DOB</th>
<th>Address</th>
</tr>
</table>
Maybe it does not like the type? I thought you were able to use a model in a partial view (editorTemplates)??
解决方案
You ParentVM class contains a property public IList<ChildVM> Children { get; set; } but your EditorTemplate is for @model SomeNamespace.Models.Child. Change it to
@model SomeNamespace.Models.ChildVM
And rename your EditorTemplate to match
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