C# 自动映射:从空的一对一属性分配id
我试图通过使用NHibernate、AutoMapper和Fluent来映射一对一的类,但这对我不起作用。我收到此错误试图从空的一对一属性中分配id:Person 以下是我的非模型类:C# 自动映射:从空的一对一属性分配id,c#,nhibernate,fluent-nhibernate,automapper,C#,Nhibernate,Fluent Nhibernate,Automapper,我试图通过使用NHibernate、AutoMapper和Fluent来映射一对一的类,但这对我不起作用。我收到此错误试图从空的一对一属性中分配id:Person 以下是我的非模型类: public partial class Person { public int personId; public string firstName; public string lastName; public int state; public string email
public partial class Person
{
public int personId;
public string firstName;
public string lastName;
public int state;
public string emailAddress;
public User user;
}
public partial class User
{
public string Username {get; set;}
public string Password {get; set;}
public int UseLoginType {get; set}
}
模型:(为了简单起见,我删除了不必要的属性)
下面是个人和用户的流畅映射:
public PersonMap()
{
SetEntityProperties("Persons", "Person_ID");
Map(x => x.FirstName);
Map(x => x.LastName);
Map(x => x.State).CustomType(typeof(Int32));
HasOne(x => x.User).Cascade.All();
}
public UserMap()
{
Table("expense_Users");
Id(x => x.Id, "fkPersonId").GeneratedBy.Foreign("Person");
Map(x => x.Username);
Map(x => x.Password);
Map(x => x.UseLoginType);
HasOne(x => x.Person).Constrained().ForeignKey();
}
这就是我创建映射并尝试映射信息的方式:
AutoMapper.Mapper.CreateMap<Person, Models.Person>();
AutoMapper.Mapper.CreateMap<User, Models.User>();
foreach (var item in templateData.Persons)
{
save<Models.Person>(item);
}
private object save<TModel>(object templateObject)
{
var dbModel = AutoMapper.Mapper.Map<TModel>(templateObject);
return repository.Save<object>(dbModel);
}
AutoMapper.Mapper.CreateMap();
AutoMapper.Mapper.CreateMap();
foreach(templateData.Persons中的var项)
{
保存(项目);
}
私有对象保存(对象模板对象)
{
var dbModel=AutoMapper.Mapper.Map(templateObject);
返回repository.Save(dbModel);
}
有人能告诉我如何填充Person对象吗?谁能给我指出正确的方向吗?我自己解决了这个问题。还有其他方法可以解决这个问题,但我的方法是这样的 我告诉AutoMapper在创建映射时忽略了用户属性(这是用户模型的一个实例),当它像这样映射个人信息时
AutoMapper.Mapper.CreateMap<Person, Models.Person>()
.ForMember(x => x.User, opt => opt.Ignore());
我希望这个答案能帮助其他人
AutoMapper.Mapper.CreateMap<Person, Models.Person>()
.ForMember(x => x.User, opt => opt.Ignore());
AutoMapper.Mapper.CreateMap<User, Models.User>()
.ForMember(x => x.Person, opt => opt.ResolveUsing(new personResolver(loadRepository)).FromMember(x => x.PersonId));
public class personResolver : ValueResolver<int, Models.Person>
{
private DatabaseLoadRepository loadRepository;
public personResolver(DatabaseLoadRepository repo)
{
this.loadRepository = repo;
}
protected override Models.Person ResolveCore(int personId)
{
return loadRepository.FindOne<Models.Person>(x => x.Id == personId);
}
}