Rasa 2.0, how are forms working?

petasis · October 4, 2020, 11:37pm

github.com/RasaHQ/rasa-sdk

`tracker.form_slots_to_validate` returns no slots on activation

opened 06:53PM - 15 Sep 20 UTC

closed 10:28AM - 05 Oct 20 UTC

NetBKarine

type:bug

area:rasa-sdk

**Rasa version**: 2.0.0a4 **Rasa SDK version**: 2.0.0a4 **Python version**: 3.7.8 **Operating system** (windows, osx, ...): Ubuntu 18.04 **Issue**: tracker.form_slots_to_validate() ignores slots to validate when called on form activation. I didn't try it with pre-filled slots, but the problem will probably be the same as with a slot filled with a `from_trigger_intent` mapping (I think it's the check to see if there's an active loop that causes this). Here's a simple example to test it: **Command or request that led to error**: ``` rasa shell --debug Your input -> /test_form Asking other slot Your input -> /affirm Form completed. Value is value_to_correct ``` **Content of configuration file (config.yml)** (if relevant): ```yml ... policies: - name: RulePolicy ``` **Content of domain file (domain.yml)** (if relevant): ```yml intents: - affirm - test_form actions: - validate_test_trigger_intent_form forms: - test_trigger_intent_form: filled_with_trigger_intent: - type: from_trigger_intent intent: test_form value: value_to_correct other_slot: # Just to verify if value is validated later - type: from_intent intent: affirm value: True slots: filled_with_trigger_intent: type: unfeaturized other_slot: type: unfeaturized templates: utter_ask_other_slot: - text: Asking other slot utter_form_completed: - text: Form completed. Value is {filled_with_trigger_intent} ``` **Content of rules file (rules.yml)** (if relevant): ```yml ... rules: - rule: test trigger intent validation steps: - intent: test_form - action: test_trigger_intent_form - active_loop: test_trigger_intent_form - active_loop: null - action: utter_form_completed ``` **Contents of actions.py** (if relevant): ```python class ValidateTestTriggerIntentForm(Action): def name(self) -> Text: return "validate_test_trigger_intent_form" def run( self, dispatcher: CollectingDispatcher, tracker: Tracker, domain: Dict ) -> List[EventType]: extracted_slots: Dict[Text, Any] = tracker.form_slots_to_validate() logger.info(f"Validating extracted slots: {extracted_slots}") logger.info(tracker.events) validation_events: List[EventType] = [] for slot_name, slot_value in extracted_slots.items(): if slot_name == "filled_with_trigger_intent" and slot_value == "value_to_correct": validation_events.append(SlotSet("filled_with_trigger_intent", "corrected_value")) return validation_events ``` Logs show that the correct events are there and core calls the validation action with the slot: **Action server logs for first interaction**: ``` ... action-server_1 | 2020-09-15 18:16:03 INFO covidflow.actions.test_trigger_intent_form - [info ] Validating extracted slots: {} action-server_1 | 2020-09-15 18:16:03 INFO covidflow.actions.test_trigger_intent_form - [info ] [{'event': 'action', 'timestamp': 1600193759.547206, 'name': 'action_listen', 'policy': None, 'confidence': 1.0}, {'event': 'user', 'timestamp': 1600193763.3620577, 'text': '/test_form', 'parse_data': {'intent': {'name': 'test_form', 'confidence': 1.0}, 'entities': [], 'text': '/test_form', 'message_id': 'b3562360e39546a685aea2ff0afa0b29', 'metadata': {}, 'intent_ranking': [{'name': 'test_form', 'confidence': 1.0}]}, 'input_channel': 'cmdline', 'message_id': 'b3562360e39546a685aea2ff0afa0b29', 'metadata': {}}, {'event': 'action', 'timestamp': 1600193763.3705964, 'name': 'test_trigger_intent_form', 'policy': None, 'confidence': None}, {'event': 'slot', 'timestamp': 1600193763.370542, 'name': 'filled_with_trigger_intent', 'value': 'value_to_correct'}] ... ``` **Core logs for first interaction**: ``` ... 2020-09-15 18:42:58 DEBUG rasa.core.actions.forms - Activated the form 'test_trigger_intent_form'. 2020-09-15 18:42:58 DEBUG rasa.core.actions.forms - No pre-filled required slots to validate. 2020-09-15 18:42:58 DEBUG rasa.core.actions.forms - Validating user input 'UserUttered(text: /test_form, intent: {'name': 'test_form', 'confidence': 1.0}, entities: [])'. 2020-09-15 18:42:58 DEBUG rasa.core.actions.forms - Extracted 'value_to_correct' for extra slot 'filled_with_trigger_intent'. 2020-09-15 18:42:58 DEBUG rasa.core.actions.forms - Validating extracted slots: {'filled_with_trigger_intent': 'value_to_correct'} 2020-09-15 18:42:58 DEBUG rasa.core.actions.action - Calling action endpoint to run action 'validate_test_trigger_intent_form'. ... ```

So, this is a bug. Which means validation for forms in rasa 2.x is currently broken.

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Rasa 2.0, how are forms working?

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