Slot filling "asynchronously"

Rasa Open Source
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Hey there, Hey I’ve a question about slot filling… Let’s say my bot is simply triggered by intents from an user without any entities. All the relevant information for the slots would come from a third party software that will periodically (e.g 30sec) send information. Is there a way to update the slot values transparently ? In the mean time, it seems a slot could be update inside an action (I call it synchrone) using SlotSet. I’m looking for other ways to update slots asynchronously. As an example : “What is the weather ?”, where the slot : “location” will be automatically set by a third party app which knows your position and this slot has been set maybe 5 min earlier.

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I suggest you make a separate service that manages location and weather data independently of rasa. Make a process that queries the weather api every 30 seconds and stores the weather data in a local sql. When rasa detects the intent it queries the local sql for the latest data and report it to the user. No need to store the data in a slot. Similar to the example with concertbot, where a custom action pulls info from an external API.

1 Like
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@asokolow, If the above solution works for you, then perfect, Alternatively you can also update the tracker irrespective of the chat.

take a look here https://core.rasa.com/http.html#endpoints

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I agree with you, It thought about this too! thank you, we are on the same track

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Thank you, I will have a look now :slight_smile: it seems to be a good approach.

6

Hey there - I’m trying to click on the link you sent, but it looks like it’s been taken down / changed. I’m trying to get additional fields from Twilio metadata to be added to the conversational tracker. Do you know the most efficient way I might do this? Thanks

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take a look at the updated link

for the metadata, you can push metadata in the event tracker as slots

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Hi @souvikg10 , thanks for your response. In my case, I imagine that I would extract the extra Twilio metadata from the twilio.py channel in the TwilioInput class. However, after that, I don’t know how to pass the metadata internally from the twilio.py channel script as a variable for use in my custom actions (I imagine that I should want to change the slot in an action function in actions.py). Do you know how I can pass a variable I retrieve in twilio.py to the tracker?

@akelad Hi Akela - do you have any tips for building this feature in Rasa? Thanks!

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Can anyone walk me through adding an event through event broker? I’m finding that many steps are left out of the documentation.

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This is how you would fill a slot using python’s requests library.

data = {"event": "slot", 
            "name": slot_name,
            "value": slot_value}
params = {"include_events": "ALL", "output_channel": "latest", "execute_side_effects": True}
requests.post(f"http://rasa:2002/conversations/{conversation_id}/tracker/events", 
                    params=params, 
                    json=data)