fixed by pluralizing the DbSets
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Data.Entity;
namespace ProductCatalog.Models
{
// Product
public class Product
{
[Key]
public int ProductId { get; set; } // ProductID (Primary key)
public string ProductName { get; set; } // ProductName
public string ProductSku { get; set; } // ProductSKU
public int BaseQuantity { get; set; } // BaseQuantity
public decimal BaseCost { get; set; } // BaseCost
// Reverse navigation
public virtual ICollection<RelatedProduct> ParentProducts { get; set; } // RelatedProduct.FK_RelatedProductChildID
public virtual ICollection<RelatedProduct> ChildProducts { get; set; } // RelatedProduct.FK_RelatedProductParentID
public virtual ICollection<RelatedProduct> RelatedProducts { get; set; }
}
// RelatedProduct
public class RelatedProduct
{
[Key, Column(Order = 0)]
public int ParentId { get; set; } // ParentID
[Key, Column(Order = 1)]
public int ChildId { get; set; } // ChildID
public int Quantity { get; set; } // Quantity
public bool Required { get; set; } // Required
public bool Locked { get; set; } // Locked
// Foreign keys
public virtual Product ParentProduct { get; set; } // FK_RelatedProductParentID
public virtual Product ChildProduct { get; set; } // FK_RelatedProductChildID
}
public class ProductDBContext : DbContext
{
public IDbSet<Product> Products { get; set; } // Product
public IDbSet<RelatedProduct> RelatedProducts { get; set; } // RelatedProduct
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<RelatedProduct>()
.HasRequired(a => a.ParentProduct)
.WithMany(b => b.ChildProducts)
.HasForeignKey(c => c.ParentId) // FK_RelatedProductParentID
.WillCascadeOnDelete(false);
modelBuilder.Entity<RelatedProduct>()
.HasRequired(a => a.ChildProduct)
.WithMany(b => b.ParentProducts)
.HasForeignKey(c => c.ChildId); // FK_RelatedProductChildID
}
}
}