EF Core 5.0 中的一對一關系

Question

我正在創建一個標准示例 model User -> UserProfile。

應用用戶

public class ApplicationUser : IdentityUser
{
    public Profile UserProfile { get; set; }
}

輪廓

public class Profile
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string ApplicationUserId { get; set; }
    public ApplicationUser ApplicationUser { get; set; }
    public string AvatarUrl { get; set; }
    public List<Bage> Bages { get; set; } = new List<Bage>();
}

數據庫上下文

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public DbSet<Profile> Profiles { get; set; }
    public DbSet<Bage> Bages { get; set; }
    
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
    {
        //
    }
}

這就是我添加數據的方式：

ApplicationUser botva = new ApplicationUser
{
    UserName = "12313dsafdsd2",
    Email = "dasd@gmail.com",
    SecurityStamp = Guid.NewGuid().ToString()
};
_context.Users.Add(botva);

Profile BotvaProfile = new Profile { Name = "123 123", AvatarUrl = "123", ApplicationUser = botva };
_context.Profiles.Add(BotvaProfile);

Bage bage = new Bage { Name = "123", ImgUrl = "url/123" };
_context.Bages.Add(bage);

BotvaProfile.Bages.Add(bage);
_context.SaveChanges();

在數據庫中正確創建的所有內容。 唯一的問題是主ApplicationUser class，由於某種原因，不包含對 Profile 的引用：

問題是什么？

Answer 1

我認為您需要反轉您的課程

public class ApplicationUser : IdentityUser
    {
        public int ProfileId
        public Profile Profile { get; set; }
    }

public class Profile
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public virtual ApplicationUser ApplicationUser { get; set; }
        public string AvatarUrl { get; set; }
        public List<Bage> Bages { get; set; } = new List<Bage>();

    }

在這種情況下，您的代碼將是

var botvaProfile = new Profile { Name = "123 123", AvatarUrl = "123"} 
var bage = new Bage { Name = "123", ImgUrl = "url/123" };
botvaProfile.Bages.Add(bage);

ApplicationUser botva = new ApplicationUser
            {
                UserName = "12313dsafdsd2",
                Email = "dasd@gmail.com",
                SecurityStamp = Guid.NewGuid().ToString(),
                Profile=botvaProfile
            };
 _context.Users.Add(botva);
 _context.SaveChanges();