我在EF模型中遇到验证问题,我似乎无法弄明白。不引人注目的Javascript验证部分按预期工作。
考虑以下模型(RequiredIf
属性来自this library):
public class Conversation
{
public int Id { get; set; }
public User User { get; set; }
public String Handler { get; set; }
}
[ComplexType]
public class User
{
public bool Anonymous { get; set; }
[RequiredIf("Anonymous", false)]
[Display(Name = "Full name")]
public String Name { get; set; }
}
我的编辑器视图仅显示User
的字段,这是我的控制器。
[HttpPost()]
public ActionResult Create(Conversation conversation)
{
if (ModelState.IsValid)
{
_db.Conversations.Add(conversation);
_db.SaveChanges(); // fails on this line
}
return RedirectToAction("Index");
}
这会导致以下错误:
DbUnexpectedValidationException: An unexpected exception was thrown during validation of 'Full name' when invoking Mvc.ValidationToolkit.RequiredIfAttribute.IsValid. See the inner exception for details.
内在的例外:
Member 'Conversation.Anonymous' not found.
为什么验证会突然寻找Conversation.Anonymous
,而不是Conversations.Client.Anonymous
?
答案 0 :(得分:2)
您不应该在视图中直接使用您的实体。创建特定于视图的视图模型,然后使用AutoMapper之类的东西将域对象映射到视图模型。将所有必需,长度等验证放在视图模型上。
var model = Mapper.Map<Conversation, ConversationViewModel>(conversation);
return View(model);