/// <summary>
/// Filter to apply the mapping between the Core.Survey business object
/// and the Model.TopTenSurveysViewModel. It uses Automapper to perform
/// the mapping. The configuration of Automapper is in the Mapping folder
/// </summary>
/// <param name="filterContext">The filterContext returned by the Action method, containing the Controller viewData.</param>
/// <remarks>
/// We override the OnActionExecuted so that the mapping is done AFTER the
/// action method has executed. The action method returns the Domain,Order
/// object and this filter passes the mapped Model.OrderDetailViewModel
/// to the view prior to it being rendered.
/// </remarks>
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
// create an instance of the viewmodel class and map the incomming data to it
HomeLChooseViewModel viewModel = new HomeLChooseViewModel();
// populate the viewModel
viewModel.Categories = new SelectList(_categoryRepository.GetAll(), "CategoryId", "Description");
//replace the viewData in the filterContext.
filterContext.Controller.ViewData.Model = viewModel;
}
public ActionResult Choose()
{
ViewBag.Message = "Select a category to display the list of available surveys";
ViewBag.Title = "Available Surveys";
// create an instance of the viewmodel class and map the incomming data to it
HomeLChooseViewModel viewModel = new HomeLChooseViewModel();
// populate the viewModel wth the categories
viewModel.Categories = new SelectList(_categoryRepository.GetAll(), "CategoryId", "Description");
// Now pass the viewModel to the view, avoids sending the null to the view, which avoids the
// null reference exceptions being suppressed automatically and improves performance.
return View(viewModel);
}
