如何使Automapper映射另一个表的一部分属性

Question

我有3个相关的表。 Employee，Relative，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，该值是RelationTypeCatalog类的属性。我是编码和自动映射的新手，我真的可以使用一些帮助和指导。我能够将“ Relationship”字段设置为null。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));
    }

这里是我得到的JSON响应。

{
    "id": 1,
    "name": "Camacho",
    "age": 29,
    "dni": "[phone]",
    "relatives": [
        {
            "id": 3,
            "name": "Diego",
            "age": 15,
            "relationship": null
        }
}

我期望得到的是"relationship": "Espouse"wich是“ RelationType”字段中的对应值

Answer 1

Rob指出问题似乎是由您的输入引起的，而不是由AutoMapper引起的，如在下面的示例中，Relationship被映射：

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");