我有一個使用EF7的ASP.NET5 MVC應用程序。它到目前為止工作得很好,我能夠在數據庫中添加遷移和持久數據。現在,在將Identity添加到我的數據層項目後,我在嘗試添加新遷移時遇到此錯誤:
實體類型'Microsoft.AspNet.Identity.EntityFramework.IdentityUserLogin'需要定義一個鍵
我的上下文源自IdentityDbContext:
public class ASSWebApiContext : IdentityDbContext<AppUser>
AppUser類:
using Microsoft.AspNet.Identity.EntityFramework;
using System;
namespace ASS.DomainDataModel.Models
{
public class AppUser : IdentityUser
{
public string AppUserId { get; set; }
public DateTime FirstFlight { get; set; }
}
}
project.json
{
"version": "1.0.0-*",
"description": "ASS.DomainDataModel Class Library",
"authors": [ "xxxx" ],
"tags": [ "" ],
"projectUrl": "",
"licenseUrl": "",
"frameworks": {
"dnx451": {
"dependencies": {
}
},
"dnxcore50": {
"dependencies": {
}
}
},
"dependencies": {
"ASS.DomainClasses": "1.0.0-*",
"Microsoft.Extensions.PlatformAbstractions": "1.0.0-rc1-final",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0-rc1-final",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0-rc1-final",
"Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
"EntityFramework.Core": "7.0.0-rc1-final",
"EntityFramework.Commands": "7.0.0-rc1-final",
"EntityFramework.Relational": "7.0.0-rc1-final",
"System.Linq.Expressions": "4.0.11-beta-23516",
"EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
"Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final"
},
"commands": {
"ef": "EntityFramework.Commands"
}
}
我在這裡所做的就是加載相關的新軟件包:“Microsoft.AspNet.Identity.EntityFramework”:“3.0.0-rc1-final”,添加了AppUser類 - 沒有別的。我有一個類似的項目使用beta-8使用完全相同的模式,它沒有問題。 beta-8和rc-1之間是否有任何相關變化?
謝謝!
以下是ASSWebApiContext的一部分。對於大多數具有DbSet的實體,都有一個modelBuilder.Entity。所以這個文件還有很長一段時間......
using Microsoft.Data.Entity;
using ASS.DomainClasses.Entities;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.PlatformAbstractions;
using System.Linq;
using ASS.DomainClasses.Interfaces;
using System;
using Microsoft.AspNet.Identity.EntityFramework;
namespace ASS.DomainDataModel.Models
{
public class ASSWebApiContext : IdentityDbContext<AppUser>
{
public IConfigurationBuilder Config { get; set; }
public IConfigurationRoot _Configuration { get; private set; }
public ASSWebApiContext(IApplicationEnvironment appEnv)
{
Database.EnsureCreated();
Config = new ConfigurationBuilder()
.SetBasePath(appEnv.ApplicationBasePath)
.AddJsonFile("config.json");
_Configuration = Config.Build();
}
public DbSet<Address> Addresses { get; set; }
public DbSet<AddressType> AddressTypes { get; set; }
public DbSet<Aircraft> Aircrafts { get; set; }
public DbSet<AircraftModel> AircraftModels { get; set; }
public DbSet<AircraftOwner> AircraftOwners { get; set; }
public DbSet<AircraftOwnerType> AircraftOwnerTypes { get; set; }
public DbSet<Country> Countries { get; set; }
public DbSet<GPEncodingType> GPEncodingTypes { get; set; }
public DbSet<LocationPoint> LocationPoints { get; set; }
public DbSet<Manufacturer> Manufacturer { get; set; }
public DbSet<Pilot> Pilots { get; set; }
public DbSet<ServiceProvider> ServiceProviders { get; set; }
public DbSet<State> States { get; set; }
public DbSet<Trip> Trips { get; set; }
public DbSet<Stop> Stops { get; set; }
public DbSet<Track> Tracks { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<AddressType>(
e =>
{
e.Property(n => n.AddressTypeId).IsRequired().UseSqlServerIdentityColumn();
e.Property(n => n.Name).IsRequired().HasMaxLength(15);
e.Ignore(n => n.IsDirty);
});
modelBuilder.Entity<Address>(
e =>
{
e.Property(n => n.AddressId).IsRequired().UseSqlServerIdentityColumn();
e.Property(n => n.AddressTypeId).IsRequired();
e.Property(i => i.CountryId).HasMaxLength(2);
e.Property(i => i.AddrLine1).HasMaxLength(256);
e.Property(i => i.AddrLine2).HasMaxLength(256);
e.Property(i => i.AddrLine3).HasMaxLength(256);
e.Property(i => i.Postcode).HasMaxLength(50);
e.Ignore(n => n.IsDirty);
});
...
基本上認同表的鍵映射OnModelCreating
的方法IdentityDbContext
如果這個方法不叫,你最終會得到你得到了錯誤。如果您從IdentityDbContext
派生並且像在代碼中一樣提供自己的OnModelCreating
定義,則不會調用此方法。使用此設置,您必須使用base.OnModelCreating
語句顯式調用IdentityDbContext
的OnModelCreating
方法。 這個答案還討論了我在這裡發布的選項