如何使用 AutoMapper 将源映射到嵌套对象？

Question

我正在调用 API 来获取有关曲棍球比赛的信息。 API 的响应反序列化为以下内容：

public class GameResponseModel
{
  public int Id { get; set; }
  public DateTime Start { get; set; }
  public TeamResponseModel HomeTeam { get; set; }
  public TeamResponseModel AwayTeam { get; set; }
  public List<PlayerResponseModel> HomeTeamRoster { get; set; } // <------ FROM
  public List<PlayerResponseModel> AwayTeamRoster { get; set; }
}

但是，我更愿意将各自的名单代表为团队的财产，如下所示：

public class Game {
  public int Id { get; set; }
  public DateTime Start { get; set; }
  public Team HomeTeam { get; set; }
  public Team AwayTeam { get; set; }
}

public class Team
{
  public string Name { get; set; }
  public string Location { get; set; }
  public List<Player> Roster { get; set; } // <------ TO
}

如何将

GameResponseModel.HomeTeamRoster

映射到

Game.HomeTeam.Roster

？例如

CreateMap<PlayerResponseModel, Player>();
CreateMap<TeamResponseModel, Team>();
CreateMap<GameResponseModel, Game>()
  .ForMember(dest => dest.HomeTeam.Roster, opt => opt.MapFrom(src => src.HomeTeamRoster))
  .ForMember(dest => dest.AwayTeam.Roster, opt => opt.MapFrom(src => src.AwayTeamRoster));

这是一个带有 AutoMapper.Extensions.Microsoft.DependencyInjection (12.0.0) 的 .NET 7 项目。

Answer 1

我能够使用

.AfterMap()

实现这一点：

CreateMap<GameResponseModel, Game>()
  .AfterMap((src, dest) => {
    dest.HomeTeam.Roster = src.HomeTeamRoster;
    dest.AwayTeam.Roster = src.AwayTeamRoster;
  });

Answer 2

您需要添加一个映射器：PlayerEntity -> Player，然后自动映射器就会知道如何映射这些。