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Cannot set default value of a Guid column

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Grid

This is a migrated thread and some comments may be shown as answers.

Robert asked on 27 Jun 2012, 10:35 PM

I just ran into a situation with the Beta where setting the default value of a Guid column throws an error. Here is some pseudocode:

public class FloorPlanModel

{

[ScaffoldColumn(false)]

public Guid Id { get; set; }

[ScaffoldColumn(false)]

public Guid PropertyId { get; set; }

public string Name { get; set; }

public decimal Bedrooms { get; set; }

}

And the following Grid code (unnecessary parts omitted):

@(Html.Kendo().Grid<FloorPlanModel>()

.Name("floorPlanGrid")

.Columns(columns =>

{

columns.Bound(p => p.Name);

columns.Bound(p => p.Bedrooms).Width(80).EditorTemplateName("Bedrooms");

})

.DataSource(dataSource => dataSource

.Ajax()

.Batch(true)

.ServerOperation(false)

.Model(model => {

model.Id(p => p.Id);

model.Field(p => p.PropertyId).DefaultValue(Model.Id);

model.Field(p => p.Bedrooms).DefaultValue(1);

})

)

...where Model.Id is also a Guid, I get this error:

Cannot serialize objects of type System.Guid

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NotSupportedException: Cannot serialize objects of type System.Guid

Source Error:


            Line 254:        </div>
Line 255:        <div class="tab-pane" id="floorplans">
Line 256:            @(Html.Kendo().Grid<AdvancedREI.Web.Models.FloorPlanModel>()
Line 257:                .Name("floorPlanGrid")
Line 258:                .Columns(columns =>

Source File: d:\TFSWorking\AdvancedREI\Development\Development\src\AdvancedREI.Web\Views\Properties\_Edit.cshtml Line: 256

Stack Trace:


            [NotSupportedException: Cannot serialize objects of type System.Guid]
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +1180
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +354
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +354
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +354
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +354
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Serialize(IDictionary`2 object) +354
   Kendo.Mvc.Infrastructure.JavaScriptInitializer.Initialize(String id, String name, IDictionary`2 options) +260
   Kendo.Mvc.UI.Grid`1.WriteInitializationScript(TextWriter writer) +1801
   Kendo.Mvc.UI.ViewComponentBase.WriteHtml(HtmlTextWriter writer) +72
   Kendo.Mvc.UI.Grid`1.WriteHtml(HtmlTextWriter writer) +1491
   Kendo.Mvc.UI.ViewComponentBase.ToHtmlString() +106
   Kendo.Mvc.UI.ViewComponentBuilderBase`2.ToHtmlString() +16
   System.Web.WebPages.WebPageExecutingBase.WriteTo(TextWriter writer, Object content) +17
   ASP._Page_Views_Properties__Edit_cshtml.Execute() in d:\TFSWorking\AdvancedREI\Development\Development\src\AdvancedREI.Web\Views\Properties\_Edit.cshtml:256
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +280
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +125
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +196
   Glimpse.Mvc3.Plumbing.GlimpseView.Render(ViewContext viewContext, TextWriter writer) +258
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +380
   Castle.Proxies.AsyncControllerActionInvokerProxy.InvokeActionResult_callback(ControllerContext controllerContext, ActionResult actionResult) +21
   Castle.DynamicProxy.AbstractInvocation.Proceed() +72
   Glimpse.Mvc3.Interceptor.InvokeActionResultInterceptor.Intercept(IInvocation invocation) +415
   Castle.DynamicProxy.AbstractInvocation.Proceed() +316
   System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +33
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +613
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +613
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +263
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +240
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +28
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__4(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +15
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +607
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288

I can switch the Model to a string, set the default to Model.Id.ToString(), and then get it back into a Guid on the backend, but that is obviously not ideal.

Any chance this could get fixed before RTM?

Thanks!

Cannot set default value of a Guid column

Cannot serialize objects of type System.Guid

1 Answer, 1 is accepted