CODEWITHSUNDEEP
c#entity-frameworkautomapper
GuFigueiredo
GuFigueiredo

Reputation: 635

Automapper: Nested Properties w/ filter to Flattened ViewModel

I have an EF entity that looks like this:

public class Customer
{
    public int IdCustomer {get; private set;}
    public string Name {get; private set;}
    ICollection<Specialty> Specialties {get;private set;}
}

public class Specialty
{
    public int IdSpecialty {get;private set}
    public int? IdSpecTypeOne {get;private set;}
    public int? IdSpecTypeTwo {get;private set;}
    public string Name {get;private set;}

    public virtual SpecTypeOne SpecialtyTypeOne {get;private set;}
    public virtual SpecTypeTwo SpecialtyTypeOne {get;private set;}
}

public class SpecTypeOne
{
    public int IdSpecTypeOne {get;private set;}
    public string Name {get;private set;}
}

public class SpecTypeTwo
{
    public int IdSpecTypeTwo {get;private set;}
    public string Name {get;private set;}
}

and a ViewModel:

public class CustomerViewModel
{
  public int IdCustomer
  public List<CustomerSpecialtyViewModel> SpecialtyOfTypeOne {get; set;}
  public List<CustomerSpecialtyViewModel> SpecialtyOfTypeTwo {get;set;}
}

public class CustomerSpecialtyViewModel
{
  public int IdSpecialty {get;set;}
  public int IdSpecTypeOne {get;set;}
  public int IdSpecTypeTwo {get;set;}
  public string SpecTypeName {get;set;}
}

Basically, I want to build my ViewModel like above, flattening Specialty and SpecType to a single ViewModel (CustomerSpecialtyViewModel).

I'm mapping the ViewModel as:

Mapper.CreateMap<Specialty, CustomerSpecialtyViewModel>();
Mapper.CreateMap<Customer, CustomerViewModel>()
  .ForMember(d => d.SpecialtyOfTypeOne, opt => opt.MapFrom(s => s.Specialties.Where(p => p.IdSpecType == SpecTypes.TypeOne)))
  .ForMember(d => d.SpecialtyOfTypeTwo, opt => opt.MapFrom(s => s.Specialties.Where(p => p.IdSpecType == SpecTypes.TypeTwo)))

How I can include the sub-property SpecType.Name in CustomerSpecialtyViewModel, since this is a sub-property?

CustomerSpecialtyViewModel
{
     int IdSpecialty => OK
     int IdSpecType => OK
     string SpecTypeName => Getting 'NULL' - Need this
}

UPDATE: I have TWO types of SpecType (One and Two), but both have a common property (Name). I only need the property. I´ll check what type is (One or Two) internally in my Application Service. In the context of View, this doesn´t matter.

Upvotes: 0

Views: 933

Answers (1)

PatrickSteele
PatrickSteele

Reputation: 14697

I think this should work:

Mapper.CreateMap<Specialty, CustomerSpecialtyViewModel>()
    .ForMember(d => d.SpecTypeName, o => o.MapFrom(s => s.SpecialtyType.Name));

Upvotes: 1

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