正确配置多对一关系 ef core

Configuring Many-to-One relationship correctly ef core

我在我的项目中使用 CQRS 模式。我希望我的客户实体可能有一个地址数组,因此我配置了一对多 EF 关系。但是,当我创建一个新客户然后检索它时,地址字段只是一个空数组:

{
   "id": 1,
   "firstName": "string",
   "lastName": "string",
   "phone": "string",
   "email": "string",
   "primaryContact": "string",
   "secondaryContact": "string",
   "addresses": [],
   "orders": []
}

我对使用 AutoMapper 还很陌生,所以我想知道我是否没有正确配置关系

客户实体:

public class Customer : AuditableEntity
{
   public string FirstName { get; set; }
   public string LastName { get; set; }
   public string Phone { get; set; }
   public string Email { get; set; }
   public string PrimaryContact { get; set; }
   public string SecondaryContact { get; set; }

   #region Navigation Properties

   public virtual ICollection<Address> Addresses { get; set; }
   public virtual ICollection<Order> Orders { get; set; }

   #endregion
}

地址实体:

public class Address : AuditableEntity
{
   public string AddressLine1 { get; set; }
   public string AddressLine2 { get; set; }
   public string Region { get; set; }
   public string PostalCode { get; set; }
   public string Country { get; set; }
}

AddressDTO 只是在地址实体中设置的属性,没有导航属性。

public class AddressCreateDto
{
   public string AddressLine1 { get; set; }
   public string AddressLine2 { get; set; }
   public string Region { get; set; }
   public string PostalCode { get; set; }
   public string Country { get; set; }
}

GetCustomerByIdResponse

public class GetCustomerByIdResponse
{
   public int Id { get; set; }
   public string FirstName { get; set; }
   public string LastName { get; set; }
   public string Phone { get; set; }
   public string Email { get; set; }
   public string PrimaryContact { get; set; }
   public string SecondaryContact { get; set; }
        
   public virtual ICollection<Address> Addresses { get; set; }
   public virtual ICollection<Order> Orders { get; set; }
}

我的 Auto Mapper 个人资料:

public AddressProfile()
{
   CreateMap<AddressCreateDto, Address>().ReverseMap();
   CreateMap<CreateCustomerCommand, Address>().ReverseMap();
}

public CustomerProfile()
{
   CreateMap<CreateCustomerCommand, Customer>().ReverseMap();
   CreateMap<GetCustomerByIdResponse, Customer>()
      .ForMember(dst => dst.Orders, opt => opt.MapFrom(src =>
                 src.Orders))
      .ReverseMap();
}

像您一样从预编辑的 post 修复关系后,我会检查并确保在使用 EF 检索 Customer 实体时您使用的是

Include(x => x.Addresses)

所以它看起来有点像这样(简化版)

var customers = Customers
    .Include(x => x.Addresses)
    .Include(x => x.Orders)
    .ToList();

否则 EF 核心不会从数据库中获取它们。 Orders 也是如此,他们需要单独的 Include 声明。