如何在Ntier MVC中使用动态模型类传递参数

Question

Firstly,

My controller code is ;

public ActionResult Menuler_Delete(int id)
        {
           Menuler val = general_service.getMenu(id);
            general_service.Delete(val);

            return RedirectToAction("Menuler", "Admin");
         }

My generalservice code is ;

public Menuler getMenu(int id)
        {
            MenulerService mservice = new MenulerService();

            return mservice.getMenu(id);

        }
        public void Delete( T model ) 
        {
            DbIslemler<T> islem = new DbIslemler<T>();
            islem.Delete(model);
        }

menulerservice code is ;

public class MenulerService
    {
        DbIslemler<Menuler> menuler_service = new DbIslemler<Menuler>();

        public Menuler getMenu( int id)
        {
           return menuler_service.Find(id);
        }

    }

my DBIslemler code is ;

public class DbIslemler<T> : IDbIslemler<T> where T : class
    {
 public void Delete(T model)
        {
            _database.Set<T>().Remove(model);
            _database.SaveChanges();
        }

        public void Delete(object id)
        {
            T val = _database.Set<T>().Find(id);
            _database.Set<T>().Remove(val);
            _database.SaveChanges();
        }

public T Find(object id)
        {
           return _database.Set<T>().Find(id);

        }
}

namespace NTierMvc.DataAccess
{
    public class DataBase : DbContext
    {

        public DbSet<Popup> Popups { get; set; }

        public DbSet<New> News{ get; set; }

        public DbSet<Menuler> Menulers { get; set; }
    }

}

Now, I want to pass void Delete( T model ) value controller to general service. But my model class ( that's T ) changeable. Be Sometimes void Delete ( Menu model) , sometimes void Delete( Popup model) , sometimes void Delete( News model)

how can i do this? Thanks.

Answer 1

From what you are saying, you want to be able to pass any entity to generalservice.Delete() . You can do this simply by making the Delete method generic, you do not have to make the whole generalservice class generic:

public class GeneralService
{
    public void Delete<T>( T model ) 
    {
        DbIslemler<T> islem = new DbIslemler<T>();
        islem.Delete(model);
    }
}

I would say however that this doesn't look like good practice. You already have a MenuService , so why not use that to delete menu objects? GeneralService looks like an unnecessary layer in between your controller and services.