找不到類型或命名空間名稱“OpenIddictDbContext <,,>”

Question

我有個問題。 我今天早上打開了我的項目並得到了錯誤：

找不到類型或命名空間名稱'OpenIddictDbContext <,,>'（您是否缺少using指令或程序集引用？）[netcoreapp1.1]

我恢復並構建項目時發生此錯誤。 這很奇怪，因為我在我的project.json文件中有“OpenIddict”：“1.0.0- *” ，我正在使用引用： using OpenIddict ;

這個問題在我的項目中到處都會出現問題，因為他似乎沒有認識到“使用OpenIddict”

如果它有幫助，這是我得到錯誤的例子（ApplicationDbContext.cs）

 namespace Overnight.Db
{
    //the error: The type or namespace name 'OpenIddictDbContext<,,>' could not be found (are you missing a using directive or an assembly reference?)

    public class ApplicationDbContext : OpenIddictDbContext<ApplicationUser, ApplicationRole, Guid>
    {

要么

 //the error: 'OpenIddictDbContext<ApplicationUser, ApplicationRole, Guid>' does not contain a constructor that takes 1 arguments

        protected override void OnModelCreating(ModelBuilder builder)
        {

這是我的project.json：

{
  "version": "1.0.0-*",
  "buildOptions": {
      "emitEntryPoint": true
  },
  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.1.0"
    }, 
    "Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
    "AspNet.Security.Oauth.Validation": "1.0.0-alpha2-final",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.0.0",
    "OpenIddict": "1.0.0-*",
    "Npgsql.EntityFrameworkCore.PostgreSQL": "1.0.1-*",
    "Npgsql.EntityFrameworkCore.PostgreSQL.Design": "1.0.1-*",
    "Bogus": "7.1.6",
    "Overnight.Models": {
      "target": "project",
      "version": "1.0.0-*"
    }
  },
  "frameworks": {
    "netcoreapp1.1": {}
  },
  "tools": {
    "Microsoft.EntityFrameworkCore.Tools": {
        "version": "1.0.0-preview2-final"
    }
  }
}

這很奇怪，因為我在可視代碼中打開的每個項目都有這個錯誤，所以我不認為它與我的項目有關。

Answer 1

從beta2開始，OpenIddict不再帶有可以子類化的專用DbContext ，因為這種模式 - 從ASP.NET Core Identity繼承 - 被證明是相當不切實際的。

相反，現在鼓勵您直接從IdentityDbContext繼承並通過從ConfigureServices調用options.UseOpenIddict()來注冊OpenIddict所需的實體集：

project.json：

"dependencies": {
  "OpenIddict": "1.0.0-*",
  "OpenIddict.EntityFrameworkCore": "1.0.0-*",
  "OpenIddict.Mvc": "1.0.0-*"
}

啟動：

services.AddDbContext<ApplicationDbContext>(options =>
{
    // Configure the context to use Microsoft SQL Server.
    options.UseSqlServer(configuration["Data:DefaultConnection:ConnectionString"]);

    // Register the entity sets needed by OpenIddict.
    // Note: use the generic overload if you need
    // to replace the default OpenIddict entities.
    options.UseOpenIddict();
});

// Register the OpenIddict services.
services.AddOpenIddict(options =>
{
    // Register the Entity Framework stores.
    options.AddEntityFrameworkCoreStores<ApplicationDbContext>();
});

ApplicationDbContext：

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext(DbContextOptions options)
        : base(options) { }

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);
    }
}