Question

我对MVC有些新意，所以原谅我的无知。我正在使用IoC（StructureMap），我需要将我认为是一组控件的实例传递给每个视图，因此我创建了ViewModels以便适应这一点。视图模型将填充控件实例，然后呈现视图。当用户执行POST时，控件不会传递回Action。

从控制器剪断

Private _WebControls As Products.Services.IControlsRepository
Private _customerRepo As Profiles.Services.ICustomerRepository

Sub New()
    Me.New(ObjectFactory.GetInstance(Of Products.Services.IControlsRepository),
           ObjectFactory.GetInstance(Of Profiles.Services.ICustomerRepository))
End Sub

Sub New(ByVal webRepo As Products.Services.IControlsRepository, 
        ByVal custRepo As Profiles.Services.ICustomerRepository)
    _WebControls = webRepo
    _customerRepo = custRepo
End Sub

<HttpGet()>
Function SendPassword() As ActionResult
    Dim vm As New SendPasswordViewModel
    vm.Controls = _WebControls
    Return View(vm)
End Function
<HttpPost()>
Function SendPassword(ByVal model As SendPasswordViewModel) As ActionResult
    If ModelState.IsValid Then
        If _customerRepo.SendPassword(model.EmailAddress, model.Controls.WebControls.MacsDivision) = True Then
            model.SendPasswordResponseMessage = "Email successfully sent.  Please check your email for your password."
        Else
            model.SendPasswordResponseMessage = "No account was found with the email that you provided."
        End If
    End If
    Return View("SendPassword", model)
End Function

Answer 1

据我了解，您的控制器使用构造函数注入，并依赖于IControlsRepository和ICustomerRepository。由于在每个请求上创建了一个新的控制器实例，这意味着您的控制器将始终可以访问存储这些存储库的私有字段（_WebControls和_customerRepo）。因此，您无需拥有Controls SendPasswordViewModel属性。在您的POST操作中，您可以直接使用它：

<HttpPost()>
Function SendPassword(ByVal model As SendPasswordViewModel) As ActionResult
    ' Directly use _WebControls here instead of relying on model.Controls
    ...
End Function

因此，删除Controls类的SendPasswordViewModel属性，因为视图不需要存储库。它是与存储库一起使用的控制器。

不保留ASP .NET MVC ViewModel对象

1 个答案: