目前我正在尝试检查选定的项目 ID 并显示在编辑页面的下拉列表中,该页面将显示上一个选定的项目。项目根据其活动状态显示。所有活动项目都显示在下拉列表中,如果用户先前的选择选项当前处于非活动状态,它仍应默认为下拉列表中的该项目,因为它是先前所做的选择。我的问题是我无法在编辑页面上显示用户选择的非活动项目。我将发布我的所有代码,这是在另一个链接中提出的问题的延续:传递空参数
我在控制器中的代码:
private IEnumerable<SearchItems> GetItems(ItemDescriptionFormViewModel viewModel = null)
{
if(viewModel == null)
viewModel = new AppointmentViewModel();
IOrderedQueryable<ItemDescription> items= _itemDescriptionRepository.FindAll().OrderBy(
c => c.Sort == null).ThenBy(
c => c.Sort).ThenBy(c => c.Description);
if(items.Count()==0)
ModelState.AddModelError("", string.Format("No active {0} entered.", Kids.Resources.Entities.ItemDescription.EntityNamePlural));
return
_itemDescriptionRepository.FindAll().OrderBy(c => c.Description).Where(a=>a.IsActive == true || a.ItemDescriptionId == viewModel.ItemDescriptionId).Select(
c => new SearchItems {Text = c.Description, Value = c.ItemDescriptionId.ToString()});
}
我在 CONTROLLER 中的编辑方法:
[HttpGet]
[AppointmentAuthorization]
public ActionResult Edit(Guid appointmentId)
{
Appointment appointment = _appointmentService.Get(appointmentId);
if (appointment == null) return View("NotFound");
var viewModel = new AppointmentViewModel
{
AppointmentId = appointment.AppointmentId,
};
viewModel.Items= GetItems();
return this.RazorView("Edit", viewModel);
}
似乎缺少某些东西,并且在 viewModel.Items= GetItems() 中将 viewModel 作为参数传递并没有多大作用。我还有另一个用于 Edit 的 Post 方法和一个 Create 方法,它们都调用 GetItems() 方法。任何帮助都会很棒。感谢:D
这就是我在 ViewModel 类中的内容:
public IEnumberable<SearchItems> Items {get; set;}
public Guid ItemDescriptionid {get; set;}
创建方法:
[HttpGet]
[AppointmentAuthorization]
public ActionResult Create(Guid caseId)
{
var viewModel = new AppointmentViewModel
{
Items= GetItems()
};
return this.RazorView("Create", viewModel);
}
*****解决方案*****
private IEnumerable<SearchItems> GetItems(Appointment appointment)
{
IEnumerable<short?> itemDescriptionIds =
appointment.AppointmentItems.Where(c => c.ItemDescriptionId.HasValue).Select(
c => c.ItemDescriptionId).Distinct();
IOrderedQueryable<ItemDescription> itemDescription =
_itemDescriptionRepository.FindAll().Where(
a => a.IsActive == true || itemDescriptionIds.Contains(a.ItemDescriptionId)).OrderBy(
d => d.Description);
return itemDescription.Select(c=> new SearchItems{Text = c.Description, Value = c.ItemDescriptionId.ToString()});
}