Adding Variables to Directline API response in Botframework

Question

I've successfully request to the Botframework Directline API and I getting this example of json response:

{
  "type": "message",
  "id": "XXXXXXXXXXXXXXXX|0000022",
  "timestamp": "2019-10-02T21:09:25.001296Z",
  "channelId": "directline",
  "from": {
    "id": "LuchoBotV1",
    "name": "LuchoBotV1"
  },
  "conversation": {
    "id": "XXXXXXXXXXXXXXXXX"
  },
  "text": "Hay algo mas en que pueda ayudarte?",
  "speak": "Hay algo mas en que pueda ayudarte?",
  "inputHint": "expectingInput",
  "replyToId": "XXXXXXXXXXXXXXXX|0000020"
}

Now I'm working in a waterfall dialog which asks to the user some personal information (license,address,sales) and I want to add this data to the response and get a json response like this:

{
  "type": "message",
  "id": "XXXXXXXXXXXXXXXX|0000022",
  ...
  "context": {address: "Street 123", sales: "5000"}
}

I want to know if it is possible to incorporate this information to the API response. I've been searching in the documentation but I didn't found anything except how to send text.

await stepContext.context.sendActivity(messageText, null, InputHints.IgnoringInput);

Answer 1

You can add the context to activity's channel data.

BotFramework SDK v4 (Node)

await stepContext.context.sendActivity({
   text: 'Hello, World!',
   channelData: {
     context: {address: 'Street 123', sales: '5000'}
   }
});

Expected Result

{
  "type": "message",
  "id": "XXXXXXXXXXXXXXXX|XXXXXX",
  ...
  "text": "Hello, World!",
  "channelData": {
    "context": {"address": "Street 123", "sales": "5000"}
  }
}

Hope this helps!