ChatBot 返回上一个对话框

Question

I've created a chatbot using Node.js and the flow of dialogs works fine til the endDialog. Im having issues implementing a back option so it can jump back only to previous dialog. Can anyone please guide me how to solve that?

  .reloadAction(
    "restartBenefits", "Ok. Let's start over.",
    {
        matches: /^start over$|^restart$/i
    }
)

    .cancelAction(
    "cancelRequest", "Thank you for reaching out, Good bye!",
    {
        matches: /^nevermind$|^cancel$|^cancel.*request/i,
        confirmPrompt: "This will cancel your request. Are you sure?"
    }
);

Answer 1

Use a customAction

In this case you can listen for whatever you want to be a keyword for "back" and then simply route the user back to that dialog using replaceDialog

bot.customAction({
    matches: /back|last/gi, //whatever prompts you want to match.
    onSelectAction: (session, args, next) => {
         session.replaceDialog(PreviousDialog); //variable with the last dialog in it, set that somewhere, such as the end of your previous dialog
    }
})

Answer 2

I think that at the final step of the dialog waterfall you need to add the last lines in this sample step:

 /** * This is the final step in the main waterfall dialog. * It wraps up the sample "book a flight" interaction with a simple confirmation. */ async finalStep(stepContext) { // If the child dialog ("bookingDialog") was cancelled or the user failed to confirm, the Result here will be null. if (stepContext.result) { const result = stepContext.result; // Now we have all the booking details. // This is where calls to the booking AOU service or database would go. // If the call to the booking service was successful tell the user. const timeProperty = new TimexProperty(result.travelDate); const travelDateMsg = timeProperty.toNaturalLanguage(new Date(Date.now())); await stepContext.context.sendActivity(ActivityFactory.fromObject(this.lgTemplates.evaluate('BookingConfirmation', { Destination: result.destination, Origin: result.origin, DateMessage: travelDateMsg }))); } // =====> HERE: Restart the main dialog with a different message the second time around return await stepContext.replaceDialog(this.initialDialogId, { restartMsg: 'What else can I do for you?' }); }

Just change the this.initialDialogId accordingly.