小编Nyr*_*ith的帖子

这里的问题是如何生成由两个外键组成的复合主键？

我试过了:

public class ActiveQuestions_Questions 
{
    [Column(Order = 0), Key, ForeignKey("ActiveQuestion")]
    public string ActiveQuestionId {get; set;}

    [Column(Order = 1), Key, ForeignKey("Question")]
    public string QuestionId {get; set; }
}

这给了我:实体类型'ActiveQuestions_Questions'具有使用数据注释定义的复合主键.要设置复合主键,请使用fluent API.

然后我尝试在没有注释的模型构建器中使用流畅的api.

builder.Entity<ActiveQuestions_Questions>(
            build => 
            {
                build.HasKey(t => new {t.ActiveQuestionId, t.QuestionId}); 
                build.HasOne(t => t.QuestionId).WithOne().HasForeignKey<Question>(qe => qe.QuestionId);
                build.HasOne(t => t.ActiveQuestionId).WithOne().HasForeignKey<ActiveQuestion>(qe => qe.ActivateQuestionId); 
            }
        );    

这给了我:导航属性'QuestionId'无法添加到实体类型'ActiveQuestions_Questions',因为实体类型'ActiveQuestions_Questions'上已经存在具有相同名称的属性.

谁能指出我正确的方向？

问题类

public class Question 
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public string QuestionId {get; set;}

    [Required]
    public string Text {get; set;}
}

ActiveQuestion类:

public class ActiveQuestion 
{
    private DateTime …

因此，我尝试使用实现OpenIddict版本1.0.0-beta2-0580，NET core 1.1并且出现以下错误：

An unhandled exception occurred while processing the request

这是基于以下内容的：https : //github.com/openiddict/openiddict-core/tree/dev/samples

db正确注册了数据库，设置已加载，并且一切正常。在数据库中的表：__efmigrationshistory，aspnetroleclaims，aspnetroles，aspnetuserclaims，aspnetuserlogins，aspnetuserroles，aspnetusers，aspnetusertokens，basetransaction，openiddictapplications，openiddictauthorizations，openiddictscopes，openiddicttokens

然后我有以下堆栈跟踪：

InvalidOperationException: The authentication ticket was rejected because the mandatory subject claim was missing.
AspNet.Security.OpenIdConnect.Server.OpenIdConnectServerHandler+<HandleSignInAsync>d__5.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Authentication.AuthenticationHandler+<SignInAsync>d__66.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Http.Authentication.Internal.DefaultAuthenticationManager+<SignInAsync>d__14.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Mvc.SignInResult+<ExecuteResultAsync>d__14.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker+<InvokeResultAsync>d__30.MoveNext()
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker+<InvokeNextResultFilterAsync>d__28.MoveNext() …

所以我试图从 url 获取值，我想用 promise 和 async/await 来做到这一点。但是当我在 Chrome 和歌剧中运行它时，它只是站在那里等待这一点。任何人都可以指出我正确的方向还是我做错了什么？

我的组件实现：实现 OnInit

构造函数：

constructor(private route: ActivatedRoute, 
            private zone : NgZone
            ) 
            {

            }

进口：

import { Component, OnInit, NgZone } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Observable } from 'rxjs/Rx';

方法：

async ngOnInit() 
{
    var Id : string = await this.getIdFromUrl(); 
}


getIdFromUrl() : Promise<string> 
    {
        return this.route.params.map(params => 
        {   
            return params['id']; 
        }).toPromise();  
    }