从基础asp.net标识用户创建继承用户

Question

我有问题,我想在示例中创建N,两个用户对象(例如客户和供应商),这些都是asp.net IdentityUser对象所固有的.除了来自IdentityUser的数据之外,这些对象具有非常不同的附加数据.我想使用IdentityUser用户,因为这为我提供了一种灵活的方式来处理身份验证和授权.

此示例已被删除,但应提供有关无法创建具体用户的充分信息(例如,供应商的客户).我似乎需要使用UserManager对象,因为它还负责创建例如密码哈希和其他安全信息.

我收到以下错误:

{"附加'供应商'类型的实体失败,因为同一类型的另一个实体已经具有相同的主键值.当使用'附加'方法或将实体的状态设置为'未更改'或'已修改时,可能会发生这种情况'如果图中的任何实体具有冲突的键值.这可能是因为某些实体是新的并且还没有收到数据库生成的键值.在这种情况下,使用"添加"方法或"添加"实体状态来跟踪图表,然后根据需要将非新实体的状态设置为"未更改"或"已修改"."}

IdentityUser固有的类

 public class Customer : IdentityUser
 {
    public string CustomerProperty { get; set; }
 }

 public class Supplier : IdentityUser
 {
    public string SupplierProperty { get; set; }
 }

数据库上下文类

 public class ApplicationDbContext : IdentityDbContext {

      public ApplicationDbContext() : base("ApplicationDbContext")
      {
         Database.SetInitializer(new ApplicationDbInitializer());
      }

      public DbSet<Customer> CustomerCollection { get; set; }
      public DbSet<Supplier> SupplierCollection { get; set; }
 }

引发异常的种子类

 public class ApplicationDbInitializer : DropCreateDatabaseAlways<ApplicationDbContext>
 {
    protected override void Seed(ApplicationDbContext context)
    {
        var userStore = new UserStore(context);
        var userManager = new UserManager(userStore);


        // Seed customer user which inherents from asp.net IdentityUser 
        var user = userManager.FindByEmail("customer@customer.com");
        if (user == null)
        {
            user = new User()
            {
                UserName = "customer@customer.com",
                Email = "customer@customer.com"
            };

            userManager.Create(user, userPassword);

            var customerUser = new Customer()
            {
                Id = user.Id,
                CustomerProperty = "Additional Info"
            };

            context.Entry(customerUser).State = EntityState.Modified;
            context.SaveChanges();
        }

        // Seed supplier user which inherents from asp.net IdentityUser 
        var user = userManager.FindByEmail("supplier@supplier.com");
        if (user == null)
        {
            user = new User()
            {
                UserName = "supplier@supplier.com",
                Email = "supplier@supplier.com"
            };

            userManager.Create(user, userPassword);

            var supplierUser = new Supplier()
            {
                Id = user.Id,
                IBAN = "212323424342234",
                Relationship = "OK"
            };

            context.Entry(supplierUser).State = EntityState.Modified;
            context.SaveChanges();
        }
    }
}

---

****更新****

下面的解决方案有效,但我仍在努力解决两个问题:

1. 我总是希望有一个与IdentityUser相关联的用户类型(例如,供应商的客户).我虽然使用接口,但这不起作用.
2. 如果我还在用户类型上向IdentityUser添加虚拟引用,则会得到"无法确定类型'ApplicaitonUser'和'Supplier'之间关联的主要结束.必须使用关系流畅API或数据注释显式配置此关联的主要结尾.例外.

类

 public class Customer 
 {
    [Key]
    public int CustomerId { get;set; }
    public string CustomerProperty { get; set; }

    *public virtual User User { get; set; }*

 }

 public class Supplier 
 {
    [Key]
    public int SupplierId { get;set; }
    public string SupplierProperty { get; set; }

    *public virtual User User { get; set; }*
 }

**Class IdentityUser(有效)**

public class User : IdentityUser
{
    public virtual Supplier Supplier { get; set; }
    public virtual Customer Customer { get; set; }
}

**Class IdentityUser(我想要的)**

public class User : IdentityUser
{
    public virtual IConcreteUser ConcreteUser{ get; set; }
}

数据库上下文类

 public class ApplicationDbContext : IdentityDbContext {

      public ApplicationDbContext() : base("ApplicationDbContext")
      {
         Database.SetInitializer(new ApplicationDbInitializer());
      }

      public DbSet<Customer> CustomerCollection { get; set; }
      public DbSet<Supplier> SupplierCollection { get; set; }
 }

**播种班**

 public class ApplicationDbInitializer : DropCreateDatabaseAlways<ApplicationDbContext>
 {
protected override void Seed(ApplicationDbContext context)
{
    var userStore = new UserStore(context);
    var userManager = new UserManager(userStore);
    var roleManager = new RoleManager(roleStore);

    var user = userManager.FindByEmail("customer@customer.com");
    if (user == null)
    {
        user = new ApplicationUser()
        {
            UserName = "customer@customer.com",
            Email = "customer@customer.com"
            Customer = new Customer()
            {
                CustomerProperty = "Additional Info"
            }
        };

        userManager.Create(user, userPassword);
        roleManager.AddUserToRole("Customer");
    }

    user = userManager.FindByEmail("supplier@supplier.com");
    if (user == null)
    {
        user = new ApplicationUser()
        {
            UserName = "supplier@supplier.com",
            Email = "supplier@supplier.com",
            Supplier = new Supplier()
            {
                IBAN = "212323424342234",
                Relationship = "OK"
            }
        };

        userManager.Create(user, userPassword);
        roleManager.AddUserToRole("Supplier");
    }
}

}

Answer 1

正如其他人一样,我认为这是一个设计问题.有一些替代方法,如:

1. 使用角色来定义"用户类型"(用户可以是供应商和客户)
2. 使Supplier和Customer实体成为一个不是用户扩展的关系

例如:

public class ApplicationUser : IdentityUser
{
    public virtual Customer Customer { get; set; }
    public virtual Supplier Supplier { get; set; }
}

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

    public virtual ApplicationUser User { get; set; }
    public string CustomerProperty { get; set; }
}

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

    public virtual ApplicationUser User { get; set; }
    public string SupplierProperty { get; set; }
}

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public DbSet<Customer> Customers { get; set; }
    public DbSet<Supplier> Suppliers { get; set; }
}

public class ApplicationDbInitializer
             : DropCreateDatabaseAlways<ApplicationDbContext>
{
    protected override void Seed(ApplicationDbContext context)
    {
        var userStore = new UserStore(context);
        var userManager = new UserManager(userStore);
        var roleManager = new RoleManager(roleStore);

        var user = userManager.FindByEmail("customer@customer.com");
        if (user == null)
        {
            user = new ApplicationUser()
            {
                UserName = "customer@customer.com",
                Email = "customer@customer.com"
                Customer = new Customer()
                {
                    CustomerProperty = "Additional Info"
                }
            };

            userManager.Create(user, userPassword);
            roleManager.AddUserToRole("Customer");
        }

        user = userManager.FindByEmail("supplier@supplier.com");
        if (user == null)
        {
            user = new ApplicationUser()
            {
                UserName = "supplier@supplier.com",
                Email = "supplier@supplier.com",
                Supplier = new Supplier()
                {
                    IBAN = "212323424342234",
                    Relationship = "OK"
                }
            };

            userManager.Create(user, userPassword);
            roleManager.AddUserToRole("Supplier");
        }
    }
}

在你的逻辑中,你可以做一些事情:

if (User.IsInRole("Customer"))
{
    // do something
}

免责声明:这不是"复制和粘贴"示例,只是让您了解不同的方法.

Answer 2

我刚刚解决了一个类似的问题。我在 AppUser 中创建了一个抽象类型 DomainUser 的导航属性（继承自 Identity User）

public class AppUser : IdentityUser
{
    public DomainUser DomainUser { get; set; }
}

DomainUser 看起来像这样：

public abstract class DomainUser : IAggregateRoot
{
    public Guid Id { get; set; }
    public AppUser IdentityUser { get; set; }
}

我在所有具体域用户类型中从 DomainUser 继承：

public class AdministrationUser : DomainUser
{
    public string SomeAdministrationProperty { get; set; }
}

public class SupplierUser : DomainUser
{
    public string SomeSupplierProperty { get; set; }
}

public class Customer : DomainUser
{
    public string SomeCustomerProperty { get; set; }
}

在 OnModelCreating 方法的 DbContext 中，我将实体框架配置为将从 DomainUser 继承的所有实体存储在单独的表中（称为Table per Concrete Type）。并配置了 IdentityUser 和 DomainUser 之间的一对一关系：

modelBuilder.Entity<DomainUser>()
            .Map<AdministrationUser>(m =>
            {
                m.MapInheritedProperties();
                m.ToTable("AdministrationUsers");
            })
            .Map<SupplierUser>(m =>
            {
                m.MapInheritedProperties();
                m.ToTable("SupplierUsers");
            })
            .Map<Customer>(m =>
            {
                m.MapInheritedProperties();
                m.ToTable("Customers");
            });

modelBuilder.Entity<DomainUser>()
            .HasRequired(domainUser => domainUser.IdentityUser)
            .WithRequiredPrincipal(groomUser => groomUser.DomainUser);

此代码将列“DomainUser_Id”添加到 AspNetUsers 表中，现在我可以访问每个域用户中的 IdentityUser 导航属性和 AppUser 中的 DomainUser 导航属性。