Checking if slots are filled with any valid value

Rasa Open Source
1

I am making a script for building a route to a specific object. If the user asks to find a category of a place (a cafe, for example), then one answer should be displayed. If the question contains the name of a place (KFC), then a different answer should be displayed.

It is also important to make sure that the previous values ​​of some slots are reset before starting the work of the state in order to avoid context errors.

Here is what I have now:

nlu.yml:

# LOOKUPS =====
- lookup: placeName
  examples: |
    - KFC
    - Ibis
    - ATC

- lookup: placeCategory
  examples: |
    - Food
    - Rest
    - Bank


# INTENTS =====
- intent: searchStart  #Just a few examples. In fact there are many more
- examples: | 
    - Find a [Food]{"entity":"placeCategory"}
    - Find a [KFC]{"entity":"placeName"}

rules.yml:

- rule: find a place
  steps:
  - intent: searchStart
  - action: utter_search
  - action: destination_form
  - active_loop: destination_form
  - active_loop: null
  - slot_was_set:
    - requested_slot: null

domain.yml:


# SLOTS =====
slots:
placeName:
  type: text
  influence_conversation: True
  mappings:
  - type: from_entity
    entity: placeName

placeCategory:
  type: text
  influence_conversation: True
  mappings:
  - type: from_entity
    entity: placeCategory


# ENTITIES =====
entities:
- placeName
- placeCategory

# FORMS =====
forms:
  destination_form:
    required_slots:
      - placeName
      - placeCategory

# RESPONSES =====
responses:
utter_search:
  - condition:   #The condition must work for any correct and not null value in the slot
      - type: slot
        name: placeName  
        value: true
    text: "Show a list of places with a name {placeName}"

  - condition:
      - type: slot
        name: placeCategory
        value: true
    text: "Show a list of places with a category {placeCategory}"

- text: "not found"

There are some problems here:

  • The form works only once (none of the answers are displayed).
  • Conditions in responses only work if “value” is a specific value in the slot (e.g. “value: ‘KFC’”).

What am I doing wrong?

2

The form works only once

Are you clearing the slots on the form submit?

influence_conversation should be false.

3

I tried to set “false”, but it didn’t help.