MVC-5中的一对多关系

Question

我试图在一个网上商店项目中创造购买的历史，我希望类历史有购物车中的产品，我从来没有做过多对一的关系(我认为是最适合的)，你觉得呢？

    public class Clothes
        {
            [Key]
            public int Id { get; set; }


            public ClothesType Type { get; set; }

            public int Amount { get; set; }

            [Range(10, 150)]
            public double Price { get; set; }

            public string ImagePath { get; set; }

            public virtual History historyID { get; set; }
        }

public class History
    {
        [Key]
        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public int historyID { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public DateTime ShipDate { get; set; }
        public int Price { get; set; }
        public virtual ICollection<Clothes> HistClothes { get; set; }
    }

Answer 1

命名约定！如果你想要一个历史有很多衣服，而一件衣服只有一个历史，那么下面的代码很好用，这是没有实际意义的：

[Table("Clothes")]
public class Clothe
    {
        [Key]
        public int Id { get; set; }
        public ClothesType Type { get; set; }
        public int Amount { get; set; }
        [Range(10, 150)]
        public double Price { get; set; }
        public string ImagePath { get; set; }
        public History historyID { get; set; } 
    }

public class History
{
    [Key]
    public int historyID { get; set; }
    public string Email { get; set; }
    public string Address { get; set; }
    public string City { get; set; }
    public DateTime ShipDate { get; set; }
    public int Price { get; set; }
    public virtual ICollection<Clothe> ClothesHistory { get; set; }

    public History()
    {
        ClothesHistory = new List<Clothe>();
    }
}

相反，如果您希望同一件衣服有多个历史记录，而每个历史记录只有一件衣服，则此代码效果很好：

[Table("Clothes")]
public class Clothe
    {
        [Key]
        public int Id { get; set; }
        public ClothesType Type { get; set; }
        public int Amount { get; set; }
        [Range(10, 150)]
        public double Price { get; set; }
        public string ImagePath { get; set; }
        public ICollection<History> Histories { get; set; } 

        public History()
        {
            Histories = new List<History>();
        }
    }

public class History
{
    [Key]
    public int historyID { get; set; }
    public string Email { get; set; }
    public string Address { get; set; }
    public string City { get; set; }
    public DateTime ShipDate { get; set; }
    public int Price { get; set; }
    [Required]
    public Clothe RelatedClothe { get; set; }
}