Question

我有以下型号：

用户：

public class User : IEntity, INamedType
    {
        public virtual int UserId { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(100)]
        public virtual string UserName { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(100)]
        public virtual string FirstName { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(100)]
        public virtual string LastName { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(200)]
        public virtual string EmailAddress { get; set; }
        public int AreaId { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(64)]
        public string CreatedByUserName { get; set; }
        public DateTime CreatedDateTime { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(64)]
        public string LastModifiedByUserName { get; set; }
        public DateTime? LastModifiedDateTime { get; set; }
        public bool Active { get; set; }

        //Navigation properties
        public virtual Area Area { get; set; }


        public virtual ICollection<Role> Roles { get; set; }
    }

作用：

public class Role : IEntity
    {
        public int RoleId { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(100)]
        public string Name { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(1000)]
        public string Description { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(64)]
        public string CreatedByUserName { get; set; }
        public DateTime CreatedDateTime { get; set; }
        [Column(TypeName = "varchar")]
        [StringLength(64)]
        public string LastModifiedByUserName { get; set; }
        public DateTime? LastModifiedDateTime { get; set; }

        //Navigation Properties
        public ICollection<User> Users { get; set; }
    }

的UserRole：

public class UserRole
    {
        public int UserId { get; set; }
        public int RoleId { get; set; }

        //Navigation properties
        public virtual User User { get; set; }
        public virtual Role Role { get; set; }
    }

我也有一个使用此方法的CustomRoleProvider：

public override string[] GetRolesForUser(string username)
        {
            var user = _unitOfWork.UserRepository.GetUser(username);

            var roles = from r in user.Roles
                        select r.Name;

            if (roles != null)
                return roles.ToArray();
            else
                return new string[] { };
        }

所以这一切都正常，直到在UserRole表中添加或删除条目。对于User，此记录与通过添加UserRole行添加的新角色相关，但GetRolesForUser方法中没有。同样，如果删除UserRole条记录，则Role会继续记录。

但是，如果发生IISReset，那么所有正确的记录都会通过。

任何人都知道为什么会这样，以及如何纠正？

Answer 1

UserRole实体类与EF为多对多关系创建的连接表冲突。

您应该删除UserRole实体，或将User和Role中的关系映射到加入实体

public class User : IEntity, INamedType
{
    public virtual int UserId { get; set; }

    public virtual ICollection<UserRole> Roles { get; set; }
}


public class Role : IEntity
{
     public int RoleId { get; set; }

     //Navigation Properties
     public ICollection<UserRole> Users { get; set; }
}

MVC实体框架用户角色不会在上下文中出现

1 个答案: