Glass.Mapper.MapperException

[danjelv]

Hi guys,

So I've implemented your solution and the control itself is working fine - thanks for the help!

I'm using Glass.Mapper and when it comes to displaying the video on the page itself through a Html.Sitecore().Field("") I'm getting the below error in regards to the custom field type YouTubeVideoField - "No parameterless constructor defined for this object."

I've realised that the Field Type is inheriting from CustomField but cannot find any documentation about this online.

Am I missing something in regards on how to display this?

Exception: Glass.Mapper.MapperException
Message: Failed to create type BrainJocks.YouTube.Custom.FieldTypes.YouTubeVideoField
Source: Glass.Mapper
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 117
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.Execute(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 68
at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 77 at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82 at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.<CreateTaskExpression>b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82 at Glass.Mapper.Pipelines.AbstractPipelineRunner2.<>c__DisplayClass3.b__2(T args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\AbstractPipelineRunner.cs:line 82
at Glass.Mapper.AbstractService.InstantiateObject(AbstractTypeCreationContext abstractTypeCreationContext) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\AbstractService.cs:line 138
at Glass.Mapper.Sc.SitecoreService.CreateType(Type type, Item item, Boolean isLazy, Boolean inferType, Dictionary2 parameters, Object[] constructorParameters) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc\SitecoreService.cs:line 495 at Glass.Mapper.Sc.Pipelines.Response.GetModel.GetObject(String model, Database db, Rendering renderingItem) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 240 at Glass.Mapper.Sc.Pipelines.Response.GetModel.GetObject(String model, Database db, Rendering renderingItem) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 188 at Glass.Mapper.Sc.Pipelines.Response.GetModel.Process(GetModelArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper.Sc.Mvc\Pipelines\Response\GetModel.cs:line 92 at (Object , Object[] ) at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args) at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs,TResult](String pipelineName, TArgs args, Func2 resultGetter)
at Sitecore.Mvc.Presentation.Rendering.GetModel()
at Sitecore.Mvc.Presentation.Rendering.get_Model()
at Sitecore.Mvc.Presentation.ViewRenderer.get_Model()
at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)

Nested Exception

Exception: System.MissingMethodException
Message: No parameterless constructor defined for this object.
Source: mscorlib
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateConcrete.CreateConcreteTask.CreateObject(ObjectConstructionArgs args) in c:\TeamCity\buildAgent\work\8567e2ba106d3992\Source\Glass.Mapper\Pipelines\ObjectConstruction\Tasks\CreateConcrete\CreateConcreteTask.cs:line 100

Thanks!

Dan