def register_mutation(self, node, graph_name):
inp_name = f'{node.__name__}Input'
allowed_args = ['_from', '_to']
for name, func in mutators.items():
if input_reg.get(inp_name, None) is None:
args = {
k: v
for k, v in node.__dict__.items()
if isinstance(v, Scalar) and (
k in allowed_args or not k.startswith('_'))
}
input_reg[inp_name] = type(inp_name, (InputObjectType, ),
{**args})
inp_type = input_reg[inp_name]
arg_cfg = {f'{snake_case(node.__name__)}': inp_type()}
if name != 'create':
arg_cfg['id'] = String()
mutation_class = type(
f'{name.title()}{node.__name__}', (Mutation, ), {
'Arguments': type('Arguments', (), {**arg_cfg}),
'Output': node,
'mutate': func(node, graph_name)
})
self._mutations[snake_case(
mutation_class.__name__)] = mutation_class
def __init_subclass__(cls, **kwargs):
cls.Meta = type('Meta', (), {'interfaces': (GQNode,)})
super().__init_subclass__(**kwargs)
cls._collname_ = ifl.plural(snake_case(cls.__name__))
node_registry[cls.__name__] = cls
connection_registry[cls._collname_] = type(
f'{cls.__name__}Connection',
(Connection,),
{'Meta': type('Meta', (), {'node': cls})}
)
async def _create_edge(_, info, **kwargs):
data = {
k: v
for k, v in kwargs[snake_case(node.__name__)].items()
if k.lower() not in ['_id', 'id']
}
data['_created'] = arrow.utcnow().timestamp
new_data = await info.context['db'][graph_name].edge_create(
node._collname_, data)
return node(**data, **new_data)
async def _update(_, info, **kwargs):
q = f'FOR doc IN {node._collname_}'
data = {
**kwargs[snake_case(node.__name__)], '_updated':
arrow.utcnow().timestamp
}
_id = data.pop('_id', data.pop('id', None))
if _id is None:
_from = data.pop('_from', None)
_to = data.pop('_to', None)
q = (f'{q}'
f' FILTER doc._from == \"{_from}\"'
f' AND doc._to == \"{_to}\"')
else:
q = F'{q} FILTER doc._key == \"{_id}\"'
q = (f'{q}'
f' LIMIT 1'
f' UPDATE doc WITH {json.dumps(data)} IN {node._collname_}'
f' RETURN NEW')
new_data = await info.context['db'].fetch_one(q)
return node(**list(new_data)[0])
def __init_subclass__(cls, **kwargs):
cls._from = String()
cls._to = String()
super().__init_subclass__(**kwargs)
cls._collname_ = snake_case(cls.__name__)
edge_registry[cls.__name__] = cls
def register_subscription(self, subscription):
self._subscriptions[snake_case(subscription.__name__)] = subscription
def register_query(self, query):
self._queries[snake_case(query.__name__)] = query