def required_slots(self, domain: Domain) -> List[Text]:
"""A list of required slots that the form has to fill.
Returns:
A list of slot names.
"""
return list(domain.slot_mapping_for_form(self.name()).keys())
def get_mappings_for_slot(self, slot_to_fill: Text,
domain: Domain) -> List[Dict[Text, Any]]:
"""Get mappings for requested slot.
If None, map requested slot to an entity with the same name
"""
requested_slot_mappings = self._to_list(
domain.slot_mapping_for_form(self.name()).get(
slot_to_fill, self.from_entity(slot_to_fill)))
# check provided slot mappings
for requested_slot_mapping in requested_slot_mappings:
if (not isinstance(requested_slot_mapping, dict)
or requested_slot_mapping.get("type") is None):
raise TypeError("Provided incompatible slot mapping")
return requested_slot_mappings
