Extend Entity framework 5 object using partial class and map it to existing other objects

I have not seen such an issue as raised. So I created paid api developers and nopcommerce plugin developers for EF developers.

Here's what I'm trying to do:

I have a product object and can be used by EF to create a database. I want to extend the product object without changing the original class. So, I was trying to use partial classes. here the code looks like this:

namespace Nop.Core.Domain.Catalog
{
    /// <summary>
    /// Represents a product
    /// </summary>
    public partial class Product : BaseEntity, ILocalizedEntity, ISlugSupported, IAclSupported, IStoreMappingSupported
    {
        //some fields here.
        public int ProductTypeId { get; set; }
        //.....
    }
}

      

        
        
        
      

    

Now when I extend the class like this:

namespace Nop.Core.Domain.Catalog
{
    public partial class Product : BaseEntity
    {
        public int RestaurantId { get; set; }

        public virtual Restaurant BelongRestaurant { get; set; } 
     }
}

      

        
        
        
      

    

It throws an error.

The type "Nop.Core.Domain.Catalog.Product" and the type "Nop.Core.Domain.Catalog.Product" both have the same simple name "Product" and therefore cannot be used in the same model. All types in a given model must have unique simple names. Use "NotMappedAttribute" or the Ignore call in the Code First fluent API to explicitly exclude a property or type from the model.

Here is my mapping file looks like this:

namespace Nop.Plugin.Misc.Plugin
{
    public partial class ProductMap : EntityTypeConfiguration<Nop.Core.Domain.Catalog.Product>
    {
        public ProductMap()
        {
            //Table
            this.ToTable(Settings.DATABASE_TABLE_NAME);

            //Primary Key
            this.HasKey(t => t.Id);

            //Property
            this.Property(t => t.Id)
                .HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
            this.HasRequired(p => p.BelongRestaurant)
                .WithMany(r => r.Menu)
                .HasForeignKey(p => p.RestaurantId)
                .WillCascadeOnDelete(false);
        }
    }
}

      

        
        
        
      

    

Can anyone please help?