Question
I'm trying to user AutoMapper to flatten a Entity with relation to another Entity which has relation to third Entity to view model
How to map these three entities into one?
Source:
public class Address
{
public int AddressId { get; set; }
public string AddressLine1 { get; set; }
public int CityId { get; set; }
public virtual City City { get; set; }
}
public class City
{
public int CityId { get; set; }
public string CityName { get; set; }
public int CountryId { get; set; }
public virtual Country Country { get; set; }
public virtual ICollection<Address> Addresses { get; set; }
}
public class Country
{
public int CountryId { get; set; }
public string CountryName { get; set; }
public virtual ICollection<City> Cities { get; set; }
}
Destination:
Public Class AddressViewModel
{
public int AddressId { get; set; }
public string AddressLine1 { get; set; }
public int CityId { get; set; }
public string CityName { get; set; }
public int CountryId { get; set; }
public string CountryName { get; set}
}
Accepted Answer
A couple of ways (at least). If you name your viewmodel fields differently it can happen by convention:
Public Class AddressViewModel
{
public int AddressId { get; set; }
public string AddressLine1 { get; set; }
public int CityCityId { get; set; }
[DisplayName("City Name")]
public string CityCityName { get; set; }
public int CityCountryCountryId { get; set; }
[DisplayName("Country Name")]
public string CityCountryCountryName { get; set}
}
If that's too ugly, you can do it in CreateMap:
Mapper.CreateMap<Address, AddressViewModel>()
.ForMember(dest => dest.CityId, opts => opts.MapFrom(src => src.City.CityId))
.ForMember(dest => dest.CityName, opts => opts.MapFrom(src => src.City.CityName))
.ForMember(dest => dest.CountryId, opts => opts.MapFrom(src => src.City.Country.CountryId))
.ForMember(dest => dest.CountryName, opts => opts.MapFrom(src => src.City.Country.CountryName));
http://automapper.codeplex.com/wikipage?title=Flattening&referringTitle=Home
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