我正在为电子商务项目开发代码,
我有2个类:类别和产品
关系是一对多,类别有很多产品, 我想根据需要创建外键(不为null),因此,如果我添加产品,我必须输入categoryid。
当我这样做时,我收到此错误:
在表'Products'上引入FOREIGN KEY约束'FK_dbo.Products_dbo.Categories_categoryId'可能会导致循环或多个级联路径。指定ON DELETE NO ACTION或ON UPDATE NO ACTION,或修改其他FOREIGN KEY约束。
有什么想法吗?
public class Category :IObjectWithState
{
[Key]
public int CategoryId { get; set; }
[Required]
public string Discription { get; set; }
public string Notes { get; set; }
public int ParentCategoryId { get; set; }
public virtual ICollection<Product> Products { get; set; }
public virtual ICollection<Discount> Discounts { get; set; }
public virtual ICollection<ProductList> ProductLists { get; set; }
[NotMapped]
public State state { get; set; }
}
public class Product :IObjectWithState
{
[Key]
public int ProductId { get; set; }
[Required]
public string ProductName { get; set; }
[Required]
public string ShortDiscription { get; set; }
public string LongDiscription { get; set; }
[Required]
public bool Active { get; set; }
[Required]
public int categoryId { get; set; }
[ForeignKey("categoryId")]
public Category Category { get; set; }
public ICollection<ProductImage> ProductImage { get; set; }
public ICollection<Discount> Discount { get; set; }
public ICollection<Discussion> Duscussion { get; set; }
public ICollection<ProductAttributeValue> ProductAttributeValue { get; set; }
public ICollection<ProductListItem> ProductListItem { get; set; }
public ICollection<ProductSKU> ProductSKU { get; set; }
public ICollection<RelatedProduct> RelatedProduct { get; set; }
public ICollection<Review> Review { get; set; }
public ICollection<ShoppingCart> ShoppingCart { get; set; }
}
答案 0 :(得分:0)
我在迁移类
中将cascadeDelete:设置为false