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[英]'Aspnetuserlogins' requires a primary key to be defined (interconnected databases)
[英]The entity type 'AspNetUserLogins' requires a primary key to be defined?
我用 EF mydbcontext
了我的数据库,并将mydbcontext
更改为从IdentityDbContext
继承,因为我希望所有内容都在一个dbcontext
。
问题是,当我启动应用程序并在登录页面中写入凭据时,出现异常:
实体类型“AspNetUserLogins”需要定义一个主键
我以前没有得到过,因为我正在调用base.OnModelCreating(modelBuilder);
我究竟做错了什么?
public partial class AdventuresContext : IdentityDbContext<ApplicationUser>
{
public AdventuresContext()
{
}
public AdventuresContext(DbContextOptions<AdventuresContext> options)
: base(options)
{
}
public virtual DbSet<Adventures> Adventures { get; set; }
public virtual DbSet<AspNetRoleClaims> AspNetRoleClaims { get; set; }
public virtual DbSet<AspNetRoles> AspNetRoles { get; set; }
public virtual DbSet<AspNetUserClaims> AspNetUserClaims { get; set; }
public virtual DbSet<AspNetUserLogins> AspNetUserLogins { get; set; }
public virtual DbSet<AspNetUserRoles> AspNetUserRoles { get; set; }
public virtual DbSet<AspNetUserTokens> AspNetUserTokens { get; set; }
public virtual DbSet<AspNetUsers> AspNetUsers { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
if (!optionsBuilder.IsConfigured)
{
optionsBuilder.UseSqlServer("Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=Adventures");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.HasAnnotation("ProductVersion", "2.2.4-servicing-10062");
modelBuilder.Entity<Adventures>(entity =>
{
entity.HasIndex(e => e.UserId);
entity.Property(e => e.CountryCodeIso03from).HasColumnName("CountryCodeISO03From");
entity.Property(e => e.CountryCodeIso03to).HasColumnName("CountryCodeISO03To");
entity.Property(e => e.Name).HasMaxLength(50);
entity.Property(e => e.ShortDescription).HasMaxLength(128);
entity.Property(e => e.Timestamp).IsRowVersion();
entity.Property(e => e.UserId).IsRequired();
entity.HasOne(d => d.User)
.WithMany(p => p.Adventures)
.HasForeignKey(d => d.UserId)
.OnDelete(DeleteBehavior.ClientSetNull)
.HasConstraintName("FK_Adventures_Adventures");
});
}
}
我相信有两种方法可以解决这个问题。
您可以使用 getter 和 setter 在 AspNetUserLogins 类中的公共属性上添加 [Key],例如:
[Key]
public int SomeFieldName {get;set;}
或者您可以使用您的 OnModelCreating 覆盖来调用 HasNoKey(),例如:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder
.Entity<AspNetUserLogins>(o =>
{
o.HasNoKey();
});
}
AspNetUsersLogins 是 Identity 附带的标准类。 它有 2 个主键,分别是 LoginProvider 和 ProviderKey。 我试图将它们从字符串更改为 Guid,但仍然是相同的消息。 我还尝试将 [Key] 属性放在它们两个上,但我有一个例外:“InvalidOperationException:实体类型‘AspNetUserLogins’具有使用数据注释定义的复合主键。要设置复合主键,请使用 fluent API。” . 还有其他想法吗?EF 搭建的 AspNetUsersLogins 看起来像这样:
public partial class AspNetUserLogins
{
public string LoginProvider { get; set; }
public string ProviderKey { get; set; }
public string ProviderDisplayName { get; set; }
public string UserId { get; set; }
public virtual AspNetUsers User { get; set; }
}
由于您是从IdentityDbContext
继承的,因此您无需重新创建AspNet*
DbSet,我建议您删除所有内置的DbSet<AspNet*>
和modelBuilder.Entity<AspNet*>.
public partial class AdventuresContext : IdentityDbContext<ApplicationUser>
{
public AdventuresContext ()
{
}
public AdventuresContext (DbContextOptions<AdventuresContext> options)
: base(options)
{
}
public virtual DbSet<Adventures> Adventures { get; set; }
//remove below DbSet
//public virtual DbSet<AspNetRoleClaims> AspNetRoleClaims { get; set; }
//public virtual DbSet<AspNetRoles> AspNetRoles { get; set; }
//public virtual DbSet<AspNetUserClaims> AspNetUserClaims { get; set; }
//public virtual DbSet<AspNetUserLogins> AspNetUserLogins { get; set; }
//public virtual DbSet<AspNetUserRoles> AspNetUserRoles { get; set; }
//public virtual DbSet<AspNetUserTokens> AspNetUserTokens { get; set; }
//public virtual DbSet<AspNetUsers> AspNetUsers { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
if (!optionsBuilder.IsConfigured)
{
optionsBuilder.UseSqlServer("Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=Adventures");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
//...
}
}
启动文件
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews();
services.AddRazorPages();
var conn = "Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=Adventures";
services.AddDbContext<AdventuresContext>(options =>
options.UseSqlServer(conn));
services.AddDefaultIdentity<ApplicationUser>()
.AddEntityFrameworkStores<AdventuresContext>();
}
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