I need to use a service layer in the AutoMapper
profile class in ASP.NET Core
but when I inject service in the constructor it does not work. For example:
public class UserProfile : Profile
{
private readonly IUserManager _userManager;
public UserProfile(IUserManager userManager)
{
_userManager = userManager;
CreateMap<User, UserViewModel>()
.ForMember(dest => dest.FullName, opt => opt.MapFrom(src => $"{src.FirstName} {src.LastName}"));
}
}
And in Startup
Class:
public class Startup
{
public IConfigurationRoot Configuration { set; get; }
public Startup(IHostingEnvironment env)
{
//some code
}
public void ConfigureServices(IServiceCollection services)
{
services.AddSingleton<IActionContextAccessor, ActionContextAccessor>();
services.AddMvc();
services.AddScoped<IUsersPhotoService, UsersPhotoService>();
services.AddAutoMapper(typeof(UserProfile));
}
}
How do to do it?
To solve your problem you just need to wire IUserManager
in DI, and make sure UserProfile
dependency is resolved.
public void ConfigureServices(IServiceCollection services)
{
// ...
services.AddSingleton<IUserManager, UserManager>();
services.AddSingleton(provider => new MapperConfiguration(cfg =>
{
cfg.AddProfile(new UserProfile(provider.GetService<IUserManager>()));
}).CreateMapper());
}
And having that said, I would probably try to keep single responsibility per class, and not have any services injected into mapping profiles. You can populate your objects just before the mapping instead. This way it might be easier to unit test as well.