[英]ASP.Net One-to-One or Zero Relationship with Identity Models
我正在尝试从类模型Figure到ApplicationUser建立关系。 ApplicationUser可能与Figure无关,也可能与Figure无关。 图始终与ApplicationUser有关系。
我正在尝试在我的代码中执行此操作:
人物模型
public class Figure
{
[Key]
public string FigureId { get; set; }
public string Description { get; set; }
public string UserId { get; set; }
[ForeignKey("UserId")]
public virtual ApplicationUser User { get; set; }
}
Aplication用户模型
public class ApplicationUser : IdentityUser
{
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
[Required]
[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
public DateTime BirthDate { get; set; }
public string Occupation { get; set; }
public string Location { get; set; }
public virtual Figure Figure { get; set; }
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
{
var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
return userIdentity;
}
}
然后我在包管理器控制台中运行add-migration Figure
时得到了这个:
System.InvalidOperationException: Multiple object sets per type are not supported. The object sets 'ApplicationUsers' and 'Users' can both contain instances of type 'Lacivi.Models.ApplicationUser'.
at System.Data.Entity.Internal.DbSetDiscoveryService.RegisterSets(DbModelBuilder modelBuilder)
at System.Data.Entity.Internal.LazyInternalContext.CreateModelBuilder()
at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
at System.Data.Entity.Internal.LazyInternalContext.get_ModelBeingInitialized()
at System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(DbContext context, XmlWriter writer)
at System.Data.Entity.Utilities.DbContextExtensions.<>c__DisplayClass1.<GetModel>b__0(XmlWriter w)
at System.Data.Entity.Utilities.DbContextExtensions.GetModel(Action`1 writeXml)
at System.Data.Entity.Utilities.DbContextExtensions.GetModel(DbContext context)
at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext, DatabaseExistenceState existenceState, Boolean calledByCreateDatabase)
at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration)
at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration)
at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.Run()
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
at System.Data.Entity.Migrations.Design.ToolingFacade.Scaffold(String migrationName, String language, String rootNamespace, Boolean ignoreChanges)
at System.Data.Entity.Migrations.AddMigrationCommand.Execute(String name, Boolean force, Boolean ignoreChanges)
at System.Data.Entity.Migrations.AddMigrationCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
Multiple object sets per type are not supported. The object sets 'ApplicationUsers' and 'Users' can both contain instances of type 'Lacivi.Models.ApplicationUser'.
最后一行显示为红色。 我想知道那一定是问题,但我不明白。
您的DbContext类是什么样的? 如果您从IdentityDbContext<Lacivi.Models.ApplicationUser>
继承并添加了此属性
public DbSet<Lacivi.Models.ApplicationUser> ApplicationUsers { get; set; }
这很可能是问题所在,因为IdentityDbContext<T>
类已经包含一个名为Users的相同类型的属性。
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