如何让 Automapper 映射属于另一个 table 的属性

Question

我有 3 个相关的表。员工、亲戚、RelationTypeCatalog。关系是 IX_Relatives_EmployeeId 和 IX_Relatives_RelationTypeCatalogId 。我想要实现的是，当返回员工的亲属列表时，我希望字段 'Relationship' 显示存储在 'RelationType' 中的值，即 RelationTypeCatalog 的属性 class.

我是编码和自动映射器的新手，我真的需要一些帮助和指导。我能够将“Relationship”字段设为空。这是一些代码

    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime DateOfBirth { get; set; }
        public string DNI { get; set; }

        public ICollection<Relative> Relatives { get; set; }
        
    }

    public class Relative
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime DateOfBirth { get; set; }
        public Employee Employee { get; set; }
        public int EmployeeId { get; set; }
        public RelationTypeCatalog RelationTypeCatalog { get; set; }
        public int RelationTypeCatalogId { get; set; }   
    }

    public class RelationTypeCatalog
    {

        public int Id { get; set; }
        public string RelationType { get; set; }
        public ICollection<Relative> Relatives { get; set; }

    }

    public class RelativeToReturnDto
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
        public string Relationship { get; set; }

    }

and here is the Automapper

    public class AutoMapperProfiles : Profile
    {
          CreateMap<Relative, RelativeToReturnDto>()
            .ForMember(dest => dest.Age,
            opt => opt.MapFrom(src => src.DateOfBirth.CalculateAge()))
            .ForMember(dest => dest.Relationship,
            opt => opt.MapFrom(src => src.RelationTypeCatalog.RelationType));
    }

这是我收到的 JSON 回复。

{
    "id": 1,
    "name": "Camacho",
    "age": 29,
    "dni": "(865) 494-2026",
    "relatives": [
        {
            "id": 3,
            "name": "Diego",
            "age": 15,
            "relationship": null
        }
}

我期望得到的是"relationship": "Espouse" 这是'RelationType'字段

中的对应值

Answer 1

正如 Rob 所述，问题似乎是由您的输入引起的，而不是由 AutoMapper 引起的，如以下示例中映射的 Relationship：

var mapper = new Mapper(new MapperConfiguration(cfg => cfg.AddProfile<AutoMapperProfiles>()));
var relative = new Relative { RelationTypeCatalog = new RelationTypeCatalog { RelationType = "rel1" } };
var dto = mapper.Map<RelativeToReturnDto>(relative);
Debug.Assert(dto.Relationship == "rel1");

如何让 Automapper 映射属于另一个 table 的属性

How to get Automapper to map an attribute that is part of another table

c#

automapper

.net-core