请看一下我正在尝试做的这个相当人为的示例。
一,数据库模型:
public class Report
{
public Guid Id { get; set; }
public string Name { get; set; }
public ICollection<Worker> Workers { get; set; }
}
public abstract class Worker
{
public Guid Id { get; set; }
}
public class Fireman : Worker
{
public string Station { get; set; }
}
public class Cleaner : Worker
{
public string FavoriteSolvent { get; set; }
}
现在视图模型:
public class AddReportViewModel
{
public string Name { get; set; }
public List<AddFiremanViewModel> Firemen { get; set; }
public List<AddCleanerViewModel> Cleaners { get; set; }
}
public class AddFiremanViewModel
{
public string Station { get; set; }
}
public class AddCleanerViewModel
{
public string FavoriteSolvent { get; set; }
}
最后是Automapper配置文件:
public class ReportProfile : Profile
{
protected override void Configure()
{
CreateMap<AddReportViewModel, Report>();
CreateMap<AddFiremanViewModel, Fireman>();
CreateMap<AddCleanerViewModel, Cleaner>();
}
}
我希望Firemen
和Cleaners
都填充Workers
集合,这是一个ICollection<Worker>
。我希望这是有道理的。我怎样才能做到这一点?
您的视图模型不包含任何Id
字段,因此我Ignore
按照映射中的设置进行设置。然后,我只是使用LINQ的Union
子句将两个源列表组合为一个集合(在使用Automapper转换每个列表之后)。这是映射:
Mapper.CreateMap<AddReportViewModel, Report>()
.ForMember(d => d.Id, o => o.Ignore())
.ForMember(d => d.Workers, o => o.MapFrom(
s => Mapper.Map<ICollection<AddFiremanViewModel>, ICollection<Fireman>>(s.Firemen)
.Union<Worker>(Mapper.Map<ICollection<AddCleanerViewModel>, ICollection<Cleaner>>(s.Cleaners))))
;
Mapper.CreateMap<AddFiremanViewModel, Fireman>()
.ForMember(d => d.Id, o => o.Ignore())
;
Mapper.CreateMap<AddCleanerViewModel, Cleaner>()
.ForMember(d => d.Id, o => o.Ignore())
;
这是一个使用它的示例:
var vm = new AddReportViewModel
{
Name = "Sample",
Cleaners = new List<AddCleanerViewModel>
{
new AddCleanerViewModel {FavoriteSolvent = "Alcohol"}
},
Firemen = new List<AddFiremanViewModel>
{
new AddFiremanViewModel {Station = "51"},
new AddFiremanViewModel {Station = "49"}
}
};
var db = Mapper.Map<AddReportViewModel, Report>(vm);
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