实体框架核心
在执行更新数据库时抛出错误
错误:- 在表'UserRoleRelationship'上引入FOREIGN KEY约束'FK_UserRoleRelationship_UserRoels_ParentUserRoleId'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。 无法创建约束或索引。
public class UserRoleRelationship
{
[Key]
public int Id { get; set; }
[Required]
public Guid UserRoleRelationshipId { get; set; }
public virtual UserRole ChildUserRole { get; set; }
public int ChildUserRoleId { get; set; }
public virtual UserRole ParentUserRole { get; set; }
public int ParentUserRoleId { get; set; }
}
public class UserRole
{
[Key]
public int Id { get; set; }
[Required]
public Guid UserRoleId { get; set; }
public virtual Role Role { set; get; }
public int RoleId { set; get; }
public virtual U.User User { set; get; }
public int UserId { set; get; }
}
答案 0 :(得分:0)
要解决此问题,请尝试将int设置为int?如下所示:
公共诠释? ParentUserRoleId {get;组; }