RASA / Duckling Form example

actions.py

from typing import Dict, Text, Any, List, Union, Optional

from rasa_sdk import Tracker
from rasa_sdk.executor import CollectingDispatcher
from rasa_sdk.forms import FormAction


class BudgetForm(FormAction):

    def name(self) -> Text:
        return "budget_form"

    @staticmethod
    def required_slots(tracker: Tracker) -> List[Text]:
        return ["month"]

    def slot_mappings(self) -> Dict[Text, Union[Dict, List[Dict]]]:
        return {
            "month": [
            	self.from_entity(entity="time"),
            	self.from_text()
            ], 
        }

    def submit(self, dispatcher: CollectingDispatcher, tracker: Tracker, domain: Dict[Text, Any],) -> List[Dict]:
        dispatcher.utter_message(template="utter_submit")
        return []

config.yml

language: en

pipeline:
  - name: WhitespaceTokenizer
  - name: CRFEntityExtractor
  - name: EntitySynonymMapper
  - name: CountVectorsFeaturizer
    token_pattern: (?u)\b\w+\b
  - name: EmbeddingIntentClassifier
  - name: DucklingHTTPExtractor
    url: http://localhost:8000
    dimensions:
      - time
policies:
  - name: FallbackPolicy
  - name: MemoizationPolicy
  - name: FormPolicy
  - name: MappingPolicy

domain.yml

session_config:
  session_expiration_time: 60.0
  carry_over_slots_to_new_session: true
intents:
- budget
entities:
- month
- time
slots:
  month:
    type: unfeaturized
responses:
  utter_default:
  - text: I'm sorry, I don't understand
  utter_ask_month:
  - text: What month do you want to budget for?
  utter_slots_values:
  - text: Let's make a budget for {month}
  utter_submit:
  - text: Thanks
  utter_hi:
  - text: Hello!
actions:
- utter_ask_month
- utter_default
- utter_submit
- utter_slots_values
- utter_hi
forms:
- budget_form

nlu

## intent:greet
- Hi
- Hey
- Hi bot
- Hey bot
- Hello
- Good morning
- hi again
- hi folks
- hi Mister
- hi pal!
- hi there
- greetings
- hello everybody
- hello is anybody there
- hello robot
- hallo
- heeey
- hi hi
- hey
- hey hey
- hello there
- hi
- hello
- yo
- hola
- hi?
- hey bot!
- hello friend
- march
- hi

## intent:budget
- budget
- plan
- I'd like to budget
- I'd like to set a budget
- resolve my budget
- I'd like to make a budget
- I'd like to budget for [january](time)
- I'd like to budget for [next month](time)
- let's budget [this month](time)
- budget for [march](time)
- budget for [next month](time)
- budget for [today](time)
- let's budget for [january](time)
- can you help me budget?
- do you budget?
- I want to budget
- budgeting is what I am here for
- let's do some budgeting

stories

## greet
* greet
  - utter_hi
  
## budget month
* budget
  - budget_form
  - form{"name": "budget_form"}
  - form{"name": null}
  - utter_slots_values

## budget with month
* budget{"time": "january"}
  - budget_form
  - form{"name": "budget_form"}
  - form{"name": null}
  - utter_slots_values