模型数据未在事件后发生 [英] model data not coming through on post event
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问题描述
您好，我无法在帖子上获取模型数据。下面是控制器和视图的代码。
Hello, I am having trouble getting model data on a post. Below is the code for the controller, and view.
Function LineItems(ByVal id As Integer?) As ActionResult
If IsNothing(id) = True Then
Return HttpNotFound()
End If
' this is the maximum number of line items on the
' purchase order file
Dim numberOfLineItems As Integer = 24
Dim _model As New POViewModel.lineItems()
_model.tbl_po = db.tbl_po.Find(id)
' get the user id
Dim _userQ = From _person In db.tbl_people
Where _person.username = User.Identity.Name
Select _person
Dim _userId As Integer = _userQ.ToList(0).id
Dim poQuery = From _po As tbl_po In db.tbl_po
Order By _po.number
Where _po.issuedTo = _userId
Select _po
_model.poNumbers = New SelectList(poQuery.ToList(), "number", "number")
If IsNothing(id) = False Then
Dim lineItemQuery = From _lineItem As tbl_po_lineItem In db.tbl_po_lineItem
Where _lineItem.poNumber = _model.tbl_po.number
Order By _lineItem.id
Select _lineItem
Dim _lineItemList As List(Of tbl_po_lineItem) = lineItemQuery.ToList()
If lineItemQuery.ToList().Count < numberOfLineItems Then
Dim _index As Integer = 0
For _index = 0 To numberOfLineItems - 1
If _index >= _lineItemList.Count = True Then
Dim newLineItem As New tbl_po_lineItem()
newLineItem.poNumber = _model.tbl_po.number
_lineItemList.Add(newLineItem)
End If
Next _index
End If
_model.lineItems = _lineItemList
End If
Return View(_model)
End Function
<HttpPost()>
<ValidateAntiForgeryToken()>
Function LineItems(ByVal _model As POViewModel.lineItems) As ActionResult
If IsNothing(_model.lineItems) = False Then
For Each _item As tbl_po_lineItem In _model.lineItems
If IsNothing(_item.id) = False And IsDBNull(_item.id) = False Then
' need to update this line item then
Dim theItem As tbl_po_lineItem = db.tbl_po_lineItem.Find(_item.id)
theItem.qty = _item.qty
theItem.lineItem = _item.lineItem
theItem.amount = _item.amount
Else
db.tbl_po_lineItem.Add(_item)
End If
Next _item
db.SaveChanges()
Return RedirectToAction("Index")
End If
Return View(_model)
End Function
@ModelType POViewModel.lineItems
@Code
ViewData("Title") = "Line Items"
Layout = "~/Views/Shared/_LayoutPO.vbhtml"
End Code
<h2>line items</h2>
<p>edit the indicated line items for the selected purchase order</p>
@Using Html.BeginForm()
@Html.AntiForgeryToken()
@<div class="form-horizontal">
@Html.ValidationSummary(True, "data provided is invalid", New With {.class = "text-danger"})
<div class="form-group">
@Html.LabelFor(Function(model) model.tbl_po.number, "po number", htmlAttributes:=New With {.class = "control-label col-md-2"})
<div class="col-md-10">
@Html.EditorFor(Function(model) model.tbl_po.number, New With {.htmlAttributes = New With {.class = "form-control", .disabled = "disabled"}})
@Html.ValidationMessageFor(Function(model) model.tbl_po.number, "", New With {.class = "text-danger"})
</div>
</div>
<table class="table">
<tr>
<td width="10%">
@Html.LabelFor(Function(model) model.tbl_po_lineItem.qty, "qty", htmlAttributes:=New With {.class = "control-label col-md-2"})
</td>
<td width="80%">
@Html.LabelFor(Function(model) model.tbl_po_lineItem.lineItem, "line item", htmlAttributes:=New With {.class = "control-label col-md-2"})
</td>
<td width="10%">
@Html.LabelFor(Function(model) model.tbl_po_lineItem.amount, "amount", htmlAttributes:=New With {.class = "control-label col-md-2"})
</td>
</tr>
@For Each _item As tbl_po_lineItem In Model.lineItems
@<tr>
<td>
@Html.EditorFor(Function(Model) _item.qty, New With {.htmlAttributes = New With {.class = "form-control"}})
</td>
<td>
@Html.EditorFor(Function(Model) _item.lineItem, New With {.htmlAttributes = New With {.class = "form-control"}})
</td>
<td>
@Html.EditorFor(Function(Model) _item.amount, New With {.htmlattributes = New With {.class = "form-control"}})
</td>
<td>
@Html.ValidationMessageFor(Function(Model) _item.qty, "", New With {.class = "text-danger"})
@Html.ValidationMessageFor(Function(Model) _item.lineItem, "", New With {.class = "text-danger"})
@Html.ValidationMessageFor(Function(Model) _item.amount, "", New With {.class = "text-danger"})
</td>
</tr>
Next _item
</table>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="saveLineItems" class="btn btn-default" />
</div>
</div>
</div>
End Using任何帮助表示赞赏。控制器发布事件中的对象全部为"无"。
Any help is appreciated. The object in the controller post event is all "nothing".
neech
推荐答案
以下是模型类：
Here is the model class:
Public Class lineItems
Public Property tbl_po As tbl_po
Public Property tbl_po_lineItem As tbl_po_lineItem
Public Property lineItems As List(Of tbl_po_lineItem)
Public Property poNumbers As IEnumerable(Of SelectListItem)
End Class
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