问题描述
因此，由于我对MVC的经验不足，因此我目前正面临一个真正无法解决的问题。我正在为我们的Web应用程序实现权限模块。为此，我有一个称为“ SourceAccessviewmodel”的viewmodel，它看起来像这样。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Weytec.Wdp.Config.Grpc;
using Weytec.Wdp.Data.Contracts;
namespace Weytec.Wdp.Config.Web
{
public class SourceAccessviewmodel
{
public Guid? deviceid { get; set; }
public Device Device { get; set; }
public Guid ProfileId { get; set; }
public bool? HasAccess { get; set; }
public int SortOrder { get; set; }
public string displayName { get; set; }
public string DeviceName { get; set; }
public bool? MouSEOnly { get; set; }
public bool IsNew { get; set; } = false;
public SourceAccessLevelPEnum AccessRight { get; set; }
public List<EndpointAccessviewmodel> EndpointAccessRights { get; set; }
public SourceAccessviewmodel()
{
}
public SourceAccessviewmodel(InheritedSourceAccessRight entity)
{
deviceid = entity.deviceid;
Device = entity.Device;
DeviceName = entity.Device.Name;
displayName = entity.displayName.Value;
ProfileId = entity.ProfileId;
MouSEOnly = entity.MouSEOnly.Value;
EndpointAccessRights = entity.EndpointAccessRights.Values.Select(x => new EndpointAccessviewmodel(x)).ToList();
AccessRight = entity.AccessRight.Value;
}
public SourceAccessviewmodel(SourceAccessRight entity)
{
deviceid = entity.deviceid;
Device = entity.Device;
ProfileId = entity.ProfileId;
displayName = entity.displayName;
DeviceName = entity.Device?.Name;
MouSEOnly = entity.MouSEOnly;
EndpointAccessRights = entity.EndpointAccessRights.Select(x => new EndpointAccessviewmodel(x)).ToList();
AccessRight = entity.AccessRight;
}
}
}
In this viewmodel there is a List of viewmodels which are related to the endpoint access rights of the device.
It looks like this:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Weytec.Wdp.Config.Grpc;
using Weytec.Wdp.Data.Contracts;
namespace Weytec.Wdp.Config.Web
{
public class EndpointAccessviewmodel
{
public string EndpointName { get; set; }
public Guid EndpointId { get; set; }
public bool? HasAccess { get; set; }
public EndpointAccessviewmodel()
{
}
public EndpointAccessviewmodel(InheritedSourceAccessRight.InheritedEndpointAccessRight entity)
{
EndpointName = entity.Endpoint.Name;
EndpointId = entity.EndpointId;
HasAccess = entity.HasAccess.Value;
}
public EndpointAccessviewmodel(EndpointAccessRight entity)
{
EndpointName = entity.Endpoint.Name;
EndpointId = entity.EndpointId;
HasAccess = entity.HasAccess.Value;
}
}
}
我们可以看到其中有一个EndpointAccessRightsviewmodels列表，如下所示：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Weytec.Wdp.Config.Grpc;
using Weytec.Wdp.Data.Contracts;
namespace Weytec.Wdp.Config.Web
{
public class EndpointAccessviewmodel
{
public string EndpointName { get; set; }
public Guid EndpointId { get; set; }
public bool? HasAccess { get; set; }
public EndpointAccessviewmodel()
{
}
public EndpointAccessviewmodel(InheritedSourceAccessRight.InheritedEndpointAccessRight entity)
{
EndpointName = entity.Endpoint.Name;
EndpointId = entity.EndpointId;
HasAccess = entity.HasAccess.Value;
}
public EndpointAccessviewmodel(EndpointAccessRight entity)
{
EndpointName = entity.Endpoint.Name;
EndpointId = entity.EndpointId;
HasAccess = entity.HasAccess.Value;
}
}
}
现在是我的问题。在视图中，我像这样针对DeviceAccessRights渲染编辑模板：
@using (Html.BeginForm("EditaccessRights","User",new { deviceid = Model.deviceid,profileId = profileId },FormMethod.Post,true,null))
{
@Html.HiddenFor(x => x.deviceid)
@Html.HiddenFor(x => x.IsNew)
<div>
<div class="marginTop30px rowOfEntry">
<div>Description:</div>
<div>@Html.TextBoxFor(x => x.displayName,new { @class = "form-control",@id = "textBox",required = "required" })</div>
</div>
<div class="rowOfEntry">
<div>Access right:</div>
<div>@Html.DropDownListFor(x => x.AccessRight,Html.GetEnumSelectList(typeof(Weytec.Wdp.Config.Grpc.sourceAccessLevelPEnum)),new { @class = "form-control" })</div>
</div>
<div class="rowOfEntry">
<div>Mouse Only:</div>
@Html.EditorFor(model => model.MouSEOnly,new { htmlAttributes = new { @class = "form-control" } })
</div>
</div>
<div class="marginTop20px">
<input type="submit" onclick="fadeIn()" class="btn btn-success saveButtonPopup" value="Save" />
<asp:Label id="savedForm" style="color: #0FB335" runat="server">Source access right saved</asp:Label>
</div>
}
之后，我想为Endpoint访问呈现相同的内容，但是线索是它并不总是被填充。如果为端点设置了访问权限，则仅将其填充在Sourceaccessright viewmodel中。但是我还是想为这种情况渲染复选框，只是不选中。因此，目前，我只是使用复选框渲染相应设备的端点，但与SourceAccessRightviewmodel无关。
@foreach (var endpoint in Model.Device.Endpoints)
{
<div class="marginTop25px">
<h5>Endpoint access right: @endpoint.Name</h5>
@Html.EditorFor(x => x.EndpointAccessRights[i].HasAccess,new { htmlAttributes = new { @class = "form-control",@id = endpoint.Id } })
</div>
}
也许一个选择是通过JSON解析视图模型，以便使用ajax请求，但这听起来并不是最好的解决方案。 我现在真的不知道该如何解决..有人可以帮我这个忙吗？
解决方法
我也遇到这种问题，并以此方式解决了。
您将获得所有EndpointAccessRight（不同类型），并将其与1 InheritedSourceAccessRight的EndpointAccessRight集合进行比较。如果类型不在集合中，则将其添加到集合中并将其设置为false或null。现在，您拥有一个完整的EndpointAccessRight集合，其中包含所有类型，并且视图将是统一的。
示例（可能并非100％正确）
foreach (var endpointAccessRight in allEndpointAccessRights)
{
if (!inheritedSourceAccessRight.EndPointAccessRights.Any(item => item.EndpointId == endpointAccessRight.EndpointId ))
{
endpointAccessRight.HasAccess = false; // or null
inheritedSourceAccessRight.EndPointAccessRights.Add(endpointAccessRight);
}
}