Hey. This is my first Rasa project and now I am stuck here for a week. Please respond ASAP if possible. I’m going behind my deadline already because of this 
I have a Form Action which has to fill 2 kind of slots:
- distance - this should be extracted either by Duckling “distance” entity, or Duckling “number” entity (it depends on the user response: “22 km” or just “22”)
- score - this is just a number in a defined range and should be extracted by Duckling “number” entity
I have gone through almost everything this week: your example formbot, your source cods etc and everything available in GitHub or forum.
So far, I came to a conclusion that I need to have 2 kind of entities: distance and number with the same names as Duckling entities. And I have to keep 2 slots: distance_slot and score correspondingly.
That’s why my slot_mapping looks like this:
def slot_mapping(self,tracker):
return {
"distance_slot": [self.from_entity(entity="distance", intent=["inform"]),
self.from_entity(entity="number", intent=["inform"])
],
"score": self.from_entity(entity="number", intent=["inform"])
}
So I train and run it in shell debug mode.
The problem is the following:
I see that it extracts distance when I write for example “30 miles” as “distance” entity with very high confidence and number entity when I just write “30” again with high confidence. But, It keeps throwing "Failed to extract slot distance_slot with action main_form" error.
What is wrong here, really?
Here is my code:
domain.yml
intents:
- mock:
use_entities: []
- inform
- greet
entities:
- distance
- number
slots:
distance_slot:
type: unfeaturized
auto_fill: false
score:
type: unfeaturized
auto_fill: false
templates:
utter_ask_distance_slot:
- text: "Please provide distance"
utter_ask_score:
- text: 'Please provide score'
utter_submit:
- text: All done!
utter_slots_values:
- text: "OK. \n - distance: {distance_slot}\n - score: {score}"
utter_wrong_distance:
- text: wrong distance
utter_wrong_score:
- text: wrong score
utter_greet:
- text: Hello!
utter_default:
- text: sorry, I didn't understand you, please try input something else
actions:
- utter_slots_values
- utter_greet
forms:
- main_form
actions.py
from rasa_sdk.forms import FormAction
class MainForm(FormAction):
def name(self):
return "main_form"
@staticmethod
def required_slots(tracker):
return ["distance_slot", "score"]
def slot_mapping(self, tracker):
return {
"distance_slot": [
self.from_entity(entity="distance", intent="inform"),
self.from_entity(entity="number", intent="inform")
],
"score": self.from_entity(entity="number", intent="inform")
}
@staticmethod
def is_int(string):
"""Check if a string is an integer"""
try:
int(string)
return True
except ValueError:
return False
def validate_distance_slot(
self,
value,
dispatcher,
tracker,
domain
):
if self.is_int(value) and 1 <= int(value) <= 200:
return {"distance_slot": value}
else:
dispatcher.utter_template("utter_wrong_distance", tracker)
return {"distance_slot": None}
def validate_score(
self,
value,
dispatcher,
tracker,
domain,
):
if self.is_int(value) and 100 < int(value) < 2000:
return {"score": value}
else:
dispatcher.utter_template("utter_wrong_score", tracker)
return {"score": None}
def submit(self,
dispatcher,
tracker,
domain
):
dispatcher.utter_template("utter_submit", tracker)
return []
config.yml
language: en
pipeline:
- name: WhitespaceTokenizer
- name: EntitySynonymMapper
- name: CountVectorsFeaturizer
token_pattern: (?u)\b\w+\b
- name: EmbeddingIntentClassifier
- name: DucklingHTTPExtractor
url: http://localhost:8000
dimensions:
- number
- distance
policies:
- name: FallbackPolicy
- name: MemoizationPolicy
- name: FormPolicy
- name: MappingPolicy
nlu.md (inform intent only)
## intent:inform
- my score is [750](number)
- score [650](number)
- [30 km](distance) is good
- just [50 kilometers](distance)
- [60 km](distance)
- up to [70 km](distance)
- [ten kilometers](distance)
- [eleven km](distance)
- my score is just [650](number)
- [750](number)
- [680](number)
- [45](number)
- [55](number)
- [35](number)
- [40](number)
- [700](number)
- [600](number)
- just [40 miles](distance)
- my score is [700](number)
- my score is [750](number)
- just [40 km](distance)
- my score is [750](number)
- my score is [750](number)
just a typo ruined my last few days.