我有问题,我想在其中创建N个,示例中的两个用户对象(例如客户和供应商),它们都是 asp.net IdentityUser对象固有的。除了来自 IdentityUser 的数据之外,这些对象还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。
这个例子已经被非常精简了,但应该提供足够的信息,说明无法创建具体用户(例如供应商的客户)。似乎我需要使用 UserManager 对象,因为它还负责创建例如密码哈希和其他安全信息。
我出现以下错误:
{"附加类型为'供应商'的实体失败,因为同一类型的另一个实体已具有相同的主键值。使用"附加"方法或将实体的状态设置为"未更改"或"已修改"(如果图形中的任何实体具有冲突的键值)时,可能会发生这种情况。这可能是因为某些实体是新的,尚未收到数据库生成的键值。在这种情况下,请使用'添加'方法或'已添加'实体状态来跟踪图形,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,但我仍在为两个问题而苦苦挣扎:
- 我总是希望将一种用户类型(例如供应商的客户)与身份用户相关联。我虽然关于使用界面,但这不起作用。
- 如果我还在用户类型上添加对 IdentityUser 的虚拟引用,我会得到"无法确定类型"ApplicaitonUser"和"供应商"之间关联的主端。此关联的主体端必须使用关系流畅 API 或数据注释显式配置。
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; }*
}
**类身份用户(有效)**
public class User : IdentityUser
{
public virtual Supplier Supplier { get; set; }
public virtual Customer Customer { get; set; }
}
**类身份用户(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; }
}
**播种类**
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");
}
}
}
和其他人一样,我认为这是一个设计问题。有一些替代方法,例如:
- 使用角色定义"用户类型"(用户可以是供应商和客户)
- 使
Supplier
和Customer
实体成为关系而不是用户的扩展
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,你可以做这样的事情:
if (User.IsInRole("Customer"))
{
// do something
}
免责声明:这不是一个"复制和粘贴"示例,应该只是让您了解不同的方法。
我刚刚解决了类似的问题。我在我的应用程序用户中创建了一个抽象类型的导航属性域用户(继承自身份用户)
public class AppUser : IdentityUser
{
public DomainUser DomainUser { get; set; }
}
域用户如下所示:
public abstract class DomainUser : IAggregateRoot
{
public Guid Id { get; set; }
public AppUser IdentityUser { get; set; }
}
我从所有具体域用户类型的域用户继承:
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 OnModelCreate 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(称为每个具体类型的表)。并在身份用户和域用户之间配置了一对一的关系:
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"添加到表 AspNetUsers 中,现在我能够访问每个域用户中的 IdentityUser 导航属性和 AppUser 中的 DomainUser 导航属性。