在FormFlow中设置BotFramework默认数据

Question

我正在使用BotBuilder的C# SDK作为BotFramework，我想做以下事情。

我有一个FormFlow对话框，它收集预订表格的信息。FormFlow中的一项是询问名称。在另一个对话框中，我正在收集名称并将其保存到userData。

context.UserData.SetValue<string>("Name", userName);

我的表单流看起来像这样。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.Bot.Builder.FormFlow;
using Microsoft.Bot.Builder.FormFlow.Advanced;
using System.Text.RegularExpressions;
using System.Threading.Tasks;


namespace DinnerBot.Dialogs
{   
    [Serializable]
    public class ReservationDialog
    {

        public enum SpecialOccasionOptions
        {
            Birthday,
            Anniversary,
            Engagement,
            none
        }

        [Prompt(new string[] { "What is your name?" })]
        public string Name { get; set; }

        [Prompt(new string[] { "What is your email?" })]
        public string Email { get; set; }

        [Pattern(@"^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$")]
        public string PhoneNumber { get; set; }

        [Prompt("What date would you like to dine with us? example: today, tomorrow, or any date like 04-06-2017 {||}", AllowDefault = BoolDefault.True)]
        [Describe("Reservation date, example: today, tomorrow, or any date like 04-06-2017")]
        public DateTime ReservationDate { get; set; }

        public DateTime ReservationTime { get; set; }

        [Prompt("How many people will be joining us?")]
        [Numeric(1, 20)]
        public int? NumberOfDinners;
        public SpecialOccasionOptions? SpecialOccasion;

        [Numeric(1, 5)]
        [Optional]
        [Describe("for how you enjoyed your experience with Dinner Bot today (optional)")]
        public double? Rating;

        public static IForm<ReservationDialog> BuildForm()
        {
            return new FormBuilder<ReservationDialog>()
                .Field(nameof(Name))
                .Field(nameof(Email), validate: ValidateContactInformation)
                .Field(nameof(PhoneNumber))
                .Field(nameof(ReservationDate))
                .Field(new FieldReflector<ReservationDialog>(nameof(ReservationDialog.ReservationTime))
                    .SetPrompt(PerLinePromptAttribute("What time would you like to arrive?"))
                    ).AddRemainingFields()
                .Build();
        }

        private static Task<ValidateResult> ValidateContactInformation(ReservationDialog state, object response)
        {
            var result = new ValidateResult();
            string contactInfo = string.Empty;
            if (GetEmailAddress((string)response, out contactInfo))
            {
                result.IsValid = true;
                result.Value = contactInfo;
            }
            else
            {
                result.IsValid = false;
                result.Feedback = "You did not enter valid email address.";
            }
            return Task.FromResult(result);
        }

        private static bool GetEmailAddress(string response, out string contactInfo)
        {
            contactInfo = string.Empty;
            var match = Regex.Match(response, @"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?");
            if (match.Success)
            {
                contactInfo = match.Value;
                return true;
            }
            return false;
        }

        private static PromptAttribute PerLinePromptAttribute(string pattern)
        {
            return new PromptAttribute(pattern)
            {
                ChoiceStyle = ChoiceStyleOptions.PerLine
            };
        }


    }
}

在我的根对话框中，我这样调用它。

                        context.Call(FormDialog.FromForm<ReservationDialog>(ReservationDialog.BuildForm,
                        FormOptions.PromptInStart), this.ReservationFormComplete);

如何让表单流跳过name字段，并从userData中获取名称(如果存在)？

Answer 1

为Name属性定义FieldReflector.SetActive。例如：

.Field(new FieldReflector<ReservationDialog>(nameof(ReservationDialog.Name))
    .SetActive((state) => SetFieldActive(state, nameof(ReservationDialog.Name)))
    ...

然后在您的SetFieldActive委托中检查名称是否已经存在，如果存在，将值设置为state并返回false。则不会显示提示符。如果找不到名称，请返回true以显示提示。

我已经写了关于这个主题的a brief blog post和a sample，你可能会感兴趣。

Answer 2

您有一些更简单的选择。

1)使您的字段可为空，如果您在保存的机器人状态中设置它们，则默认情况下将跳过它们。(除非传入FormOptions.PromptFieldsWithValues。) 2)将值转换为EntityRecommendations。如果它们与表单中的字段匹配，则也会分配并跳过它们。