PizzaStoreContext.cs

using Microsoft.EntityFrameworkCore;

namespace BlazingPizza;

public class PizzaStoreContext : DbContext
{
    public PizzaStoreContext(
        DbContextOptions options) : base(options)
    {
    }

    public DbSet<Order> Orders { get; set; }

    public DbSet<Pizza> Pizzas { get; set; }

    public DbSet<PizzaSpecial> Specials { get; set; }

    public DbSet<Topping> Toppings { get; set; }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        // Configuración de una relación especial de muchos a muchos -> topping que es amigable para la serialización
        modelBuilder.Entity<PizzaTopping>().HasKey(pst => new { pst.PizzaId, pst.ToppingId });
        modelBuilder.Entity<PizzaTopping>().HasOne<Pizza>().WithMany(ps => ps.Toppings);
        modelBuilder.Entity<PizzaTopping>().HasOne(pst => pst.Topping).WithMany();
    }

}