CODEWITHSUNDEEP
c#.netautomapper
JD_1609
JD_1609

Reputation: 69

Automapper unsupported mapping

I'm new in AutoMapper and I have problem with mapping my generic class to generic dto (using AutoMapper). I have this class:

public class Document<T>
{
    public string Id { get; set; }
    public Tag[] Tags { get; set; }
    public T? Data { get; set; }
}

and this dto:

public class DocumentDto<T>
{
    public string Id { get; set; }
    public string[] Tags { get; set; }
    public T? Data { get; set; }
}

and I need to make two-way mapping.. I created mapper profile in which I define this mapping like this:

public MapperProfile()
{
    CreateMap<Document<FinancialReport>, DocumentDto<FinancialReportDto>>()
            .ForMember(docDto => docDto.Tags, opt => opt.MapFrom(doc => doc.Tags.Select(tag => tag.Value).ToArray()));

    CreateMap<DocumentDto<FinancialReportDto>, Document<FinancialReport>>()
            .ForMember(docDto => docDto.Tags, opt => opt.MapFrom(doc => doc.Tags.Select(tag => new Tag { Value = tag }).ToArray()));

}

And then I setting this profile in extension method for dependency injection for IMapper:

public static IServiceCollection AddAutoMapper(this IServiceCollection services)
{
    services.AddSingleton<IMapper>(sp =>
    {
        var config = new MapperConfiguration(cfg => {
            cfg.AddProfile<MapperProfile>();
        });

        return config.CreateMapper();
    });

    return services;
}

And after this all when I try remap from DocumentDto=>Document or vice versa I got error: AutoMapperMappingException: Missing type map configuration or unsupported mapping.

I tryed googled for hours but nothing helped... Any ideas what I'm doing wrong?

UPDATE 1: I'm calling mapping like this:

 public async Task<IResponse> UpdateFinancialReport(DocumentDto<FinancialReportDto> documentDto)
 {

        var doc = _mapper.Map<Document<FinancialReport>>(documentDto);
 }

Upvotes: 0

Views: 464

Answers (1)

JD_1609
JD_1609

Reputation: 69

ok, I found the problem.. In MapperProfile I was missing mapping config for generic types:

CreateMap<FinancialReport, FinancialReportDto>()
            .ReverseMap();

Upvotes: 0

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