Question

我在用户身份类和另一个名为group的类之间创建了一个实体框架m：m关系。

虽然我已经为这两个类提供了一个链接到另一个类的ICollection属性，但它并没有自动创建多对多的表，而是我用流畅的API - GroupUsers表创建了它。一切似乎都没问题。

当我尝试注册用户时，它会失败。通过查看生成的SQL，似乎期望Group_Id字段出现在Users表中 - 不确定它为什么要查找它，因为它现在位于一个单独的表中。

组类（实体只有一个id属性）

public class Group : Entity
{
    public Group()
    {
        this.Users = new HashSet<User>();
    }
    [MaxLength(100)]
    public string Name { get; set; }

    public virtual ICollection<User> Users { get; set; }
}

用户类（自定义应用程序用户类）

    public class User : IdentityUser<int, CustomUserLogin, CustomUserRole, CustomUserClaim>
{
    public User()
    {
        this.Groups = new HashSet<Group>();
    }
    [Required]
    [MaxLength(100)]
    public string Firstname { get; set; }
    [Required]
    [MaxLength(100)]
    public string Lastname { get; set; }

    public virtual ICollection<Group> Groups { get; set; }

    public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<User, int> manager, string authenticationType)
    {
        // Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
        var userIdentity = await manager.CreateIdentityAsync(this, authenticationType);
        // Add custom user claims here
        return userIdentity;
    }
}

如上所示，两者都与其他类有属性关系。

Fluent API：

            modelBuilder.Entity<User>().HasMany(u => u.Groups).WithMany(g => g.Users).Map(x =>
        {
            x.MapLeftKey("GroupId");
            x.MapRightKey("UserId");
            x.ToTable("GroupUsers");
        });

以上所有内容都创建了表：User，Group和GroupUsers。

我原本预计这会按原样运作。

不幸的是，当我尝试注册用户时，它仍然期望Group_Id出现在User表中：

exec sp_executesql N'SELECT 
[Limit1].[Id] AS [Id], 
[Limit1].[Firstname] AS [Firstname], 
[Limit1].[Lastname] AS [Lastname],  
[Limit1].[Email] AS [Email], 
[Limit1].[EmailConfirmed] AS [EmailConfirmed], 
[Limit1].[PasswordHash] AS [PasswordHash], 
[Limit1].[SecurityStamp] AS [SecurityStamp], 
[Limit1].[PhoneNumber] AS [PhoneNumber], 
[Limit1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed], 
[Limit1].[TwoFactorEnabled] AS [TwoFactorEnabled], 
[Limit1].[LockoutEndDateUtc] AS [LockoutEndDateUtc], 
[Limit1].[LockoutEnabled] AS [LockoutEnabled], 
[Limit1].[AccessFailedCount] AS [AccessFailedCount], 
[Limit1].[UserName] AS [UserName], 
[Limit1].[Group_Id] AS [Group_Id] ---why is this here??
FROM ( SELECT TOP (1) 
    [Extent1].[Id] AS [Id], 
    [Extent1].[Firstname] AS [Firstname], 
    [Extent1].[Lastname] AS [Lastname], 
    [Extent1].[Email] AS [Email], 
    [Extent1].[EmailConfirmed] AS [EmailConfirmed], 
    [Extent1].[PasswordHash] AS [PasswordHash], 
    [Extent1].[SecurityStamp] AS [SecurityStamp], 
    [Extent1].[PhoneNumber] AS [PhoneNumber], 
    [Extent1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed], 
    [Extent1].[TwoFactorEnabled] AS [TwoFactorEnabled], 
    [Extent1].[LockoutEndDateUtc] AS [LockoutEndDateUtc], 
    [Extent1].[LockoutEnabled] AS [LockoutEnabled], 
    [Extent1].[AccessFailedCount] AS [AccessFailedCount], 
    [Extent1].[UserName] AS [UserName], 
    [Extent1].[Group_Id] AS [Group_Id]
    FROM [dbo].[AspNetUsers] AS [Extent1]
    WHERE ((UPPER([Extent1].[UserName])) = (UPPER(@p__linq__0))) OR ((UPPER([Extent1].[UserName]) IS NULL) AND (UPPER(@p__linq__0) IS NULL))
)  AS [Limit1]',N'@p__linq__0 nvarchar(4000)',@p__linq__0=N'myemail@myemail.com'

当我单独运行SQL时，我得到：

列名称无效＆＃39; Group_Id＆＃39;。

任何想法为什么它不能正常工作以及为什么group_id应该在那里，即使它在流畅的API中指定它不应该是？

谢谢，

在流畅的api

0 个答案: