[英]AutoMapper tries to map DbModel to dateTime
所以這是映射定義:
Mapper.CreateMap<EditMovieModel, Video>()
.ForAllMembers(options => options.ResolveUsing<CustomMovieMapper>());
我已經定義了我的自定義解析器:
public class CustomMovieMapper : ValueResolver<EditMovieModel, Video>
{
protected override Video ResolveCore(EditMovieModel source)
{
Video video = new Video();
video.ID = source.ID;
video.Name = source.Name;
video.Description = source.Description;
video.Thumbnail = source.Thumbnail;
video.FileURL = source.FileURL;
video.InsertionDate = video.InsertionDate!= null ? video.InsertionDate : DateTime.Now;
video.Director = source.Director;
video.Actors = source.Actors;
video.ProductionDate = DateTime.Now;
switch (source.MovieType)
{
case UIMovieType.Irainian:
{
video.Language = Language.Irainian;
video.VideoType = VideoType.Movie;
video.Character = Character.Real;
}
break;
case UIMovieType.Foriegn:
{
video.Language = Language.Foriegn;
video.VideoType = VideoType.Movie;
video.Character = Character.Real;
}
break;
case UIMovieType.Cartoon:
{
video.VideoType = VideoType.Movie;
video.Character = Character.Cartoon;
}
break;
case UIMovieType.Documentary:
{
video.VideoType = VideoType.Documentary;
}
break;
case UIMovieType.Theater:
{
video.VideoType = VideoType.Theater;
}
break;
}
return video;
}
}
在我的控制器的Action方法中:
Video movie = _videoRepository.Get(m => m.ID == movieViewModel.ID).SingleOrDefault();
if(movie == null)
{
movie = new Video();
}
movie = Mapper.Map(movieViewModel, movie);
當發生映射時,出現此異常:
Missing type map configuration or unsupported mapping.
Mapping types:
Video -> Nullable`1
NTV.Data.Model.Video -> System.Nullable`1[[System.DateTime, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]
Destination path:
Video.ProductionDate.ProductionDate
Source value:
NTV.Data.Model.Video
但我沒有明確地將Video映射到ProductionDate。 怎么了? 我想念的是什么?
我在這里的錯誤是我使用的是CustomReslover
而不是ITypeConverter
接口。 CustomResolver用於更改屬性而不是整個對象的映射行為,因此這是看到該錯誤的原因。 在這里,我想自定義映射的整個行為,因此是這樣的:
Mapper.CreateMap<EditMovieModel, Video>()
.ConvertUsing(new CustomMovieMapper());
public class CustomMovieMapper : ITypeConverter<EditMovieModel, Video>
{
public Video Convert(ResolutionContext context)
{
EditMovieModel source = (EditMovieModel)context.SourceValue;
Video video = (Video)context.DestinationValue;
video = video ?? new Video();
video.ID = source.ID;
video.Name = source.Name;
........
return video;
}
}
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