def available_traits (request, id):
character = session.query(Character).get(int(id))
response = storyteller_or_editing_owner(request, character, 'edit')
if response:
return response
chronicle_ids = [c.id for c in character.chronicle.all_chronicles]
availabilities = calculate_availabilities(
character,
session.query(Trait).filter(
Trait.chronicle_id.in_(chronicle_ids)
)
)
return JsonResponse(
{
'availabilities': availabilities,
},
encoder = ModelEncoder
)
def recalculate_access (self, trait):
affected_traits = set()
chronicle_ids = [c.id for c in self.character.chronicle.all_chronicles]
# Rule: character-has-trait
for rule in session.query(CharacterHasTrait).filter(
CharacterHasTrait.chronicle_id.in_(chronicle_ids),
CharacterHasTrait.other_trait_id == trait.id
):
affected_traits.add(rule.trait)
# Rule: character-does-not-have-trait
for rule in session.query(CharacterDoesNotHaveTrait).filter(
CharacterDoesNotHaveTrait.chronicle_id.in_(chronicle_ids),
CharacterDoesNotHaveTrait.other_trait_id == trait.id
):
affected_traits.add(rule.trait)
# Recalculate availabilities for affected traits.
availabilities = calculate_availabilities(self.character, affected_traits)
return availabilities
def update_character_summary (request, id):
character = session.query(Character).get(int(id))
response = storyteller_or_editing_owner(request, character, 'edit')
if response:
return response
chronicle_ids = [c.id for c in character.chronicle.all_chronicles]
affected_traits = set()
data = json.loads(request.body.decode('ascii'))
for key, value in data.items():
column = Character.__table__.columns[key]
if len(column.foreign_keys) == 0:
old_value = getattr(character, key)
new_value = value
# TODO (Emery): Check rules for character_summary attributes. (Name, last_edited, ...)
else:
TraitType = get_referenced_model(column)
key = key[:-3] # assumes key in format "<key>_id"
old_value = getattr(character, key)
new_value = None if value is None else session.query(TraitType).get(value)
if old_value:
changing_trait_ids = (old_value.id,)
else:
changing_trait_ids = tuple()
if new_value:
changing_trait_ids += (new_value.id,)
# Rule: character-has-trait
for rule in session.query(CharacterHasTrait).filter(
CharacterHasTrait.chronicle_id.in_(chronicle_ids),
CharacterHasTrait.other_trait_id.in_(changing_trait_ids)
):
affected_traits.add(rule.trait)
# Rule: character-does-not-have-trait
for rule in session.query(CharacterDoesNotHaveTrait).filter(
CharacterDoesNotHaveTrait.chronicle_id.in_(chronicle_ids),
CharacterDoesNotHaveTrait.other_trait_id.in_(changing_trait_ids)
):
affected_traits.add(rule.trait)
# Set attribute on character.
setattr(character, key, new_value)
session.flush()
# Recalculate availabilities for affected traits.
availabilities = calculate_availabilities(character, affected_traits)
return JsonResponse(
{
'character': character,
'availabilities': availabilities,
},
encoder = ModelEncoder
)