如何将用户上下文详细信息从机器人控制器传递到 FormDialog

debugcn 发表于 Dev

用户7138342

信息机器人

SDK平台：.NET
有源渠道：直线
部署环境：Azure 机器人服务

问题

如何将用户上下文详细信息从机器人控制器传递到 FormDialog？

代码示例

public virtual async Task < HttpResponseMessage > Post([FromBody] Activity activity) {
 if (activity != null && activity.GetActivityType() == ActivityTypes.Message) {
  await Conversation.SendAsync(activity, () => {
   return Chain.From(() => FormDialog.FromForm(RequestOrder.BuildEnquiryForm));
  });
 } else {
  HandleSystemMessage(activity);
 }
 return new HttpResponseMessage(System.Net.HttpStatusCode.OK);
}
public static IForm < RequestOrder > BuildEnquiryForm() {
 return new FormBuilder < RequestOrder > ()
  .Message("Hello {***Pass current user name?????****}Welcome to request bot!")
  .Field(nameof(IsTermsAgreed))
  .Field(nameof(ServiceRequired))
  .AddRemainingFields()
  .OnCompletion(ProcessParkingPermitRequest)
  .Message("Thank you, I have submitted your request.")
  .Build();
}

安妮塔·乔治

Fei Han 的回答是正确的，但使用静态变量可能会导致一些意外错误，因为所有实例都共享相同的值。更好的方法是使用表单的状态。

请求订单来自

在您的 RequestOrder 类中，您需要添加一个新的成员变量 username。

public class RequestOrder
{
     public string username;
     /* Rest of your member variables  */
}

.Message 方法允许您访问表单的状态。您可以从表单的状态中获取用户名，如下所示：

 public static IForm < RequestOrder > BuildForm() 
 {
     return new FormBuilder < RequestOrder > ()
      .Message(async (state) => {
          return new PromptAttribute($"Hi {state.username}, Welcome to request bot! ");
       })
      .Field(nameof(IsTermsAgreed))
      .Field(nameof(ServiceRequired))
      .AddRemainingFields()
      .OnCompletion(ProcessParkingPermitRequest)
      .Message("Thank you, I have submitted your request.")
      .Build();
 }

根对话框

在您的根对话框中，在调用 BuildForm 之前，您需要创建 RequestOrder 类的新实例并将 username 初始化为当前用户的名称。然后使用选项 FormOptions.PromptInStart 将您的表单传递给 BuildForm。

[Serializable]
public class RootDialog : IDialog<object>
{


    public Task StartAsync(IDialogContext context)
    {
        context.Wait(MessageReceivedAsync);

        return Task.CompletedTask;
    }

    private async Task MessageReceivedAsync(IDialogContext context, IAwaitable<object> result)
    { 
       var form = new RequestOrder()
       {
           username = context.Activity.From.Id
       };

       var requestOrderform = new FormDialog<RequestOrder>(form, RequestOrder.BuildForm, FormOptions.PromptInStart);
       context.Call<RequestOrder>(requestOrderform,  SampleFormSubmitted);
    }

    private async Task SampleFormSubmitted(IDialogContext context, IAwaitable<SampleForm> result)
    {
        try
        {
                var query = await result;
                context.Done(true);
        } 
        catch (FormCanceledException<SampleForm> e)
        {
                string reply;
                if (e.InnerException == null)
                {
                    reply = $"You quit. Maybe you can fill some other time.";
                }
                else
                {
                    reply = $"Something went wrong. Please try again.";
                }
                context.Done(true);
                await context.PostAsync(reply);
        }
    }
}

这是你得到的：