FormBlockController.cs

[TemplateDescriptor(
      Inherited = true,
      AvailableWithoutTag = true,
      Default = true,
      ModelType = typeof(FormBlockType),
      TemplateTypeCategory = TemplateTypeCategories.MvcPartialController)]
public class FormBlockController : BlockController<FormBlockType>
{
	private readonly IFormViewModelBuilder _viewModelBuilder;
	
	public FormBlockController(IFormViewModelBuilder viewModelBuilder)
	{
		this._viewModelBuilder = viewModelBuilder;
	}

	public override ActionResult Index(FormBlockType currentContent)
	{
		FormBlockViewModel viewModel = new FormBlockViewModel();
		viewModel.Form = this._viewModelBuilder.Build(currentContent.Form, ContentLanguage.PreferredCulture);
	
		//Use Partial view
		return PartialView(viewModel);
    	}
}