def cursor_resolver(self,
instance,
info,
parent_resolver=None,
before=None,
after=None,
first=None,
last=None,
**kwargs):
if parent_resolver:
qs = parent_resolver(instance, info, **kwargs)
qs = apply_ordering(qs, **kwargs)
else:
qs = instance.items
if isinstance(qs, self.type):
return qs
page_query = PageQuery(before=before,
after=after,
first=first,
last=last)
queryset, post_processors = optimize_qs(self.type, qs, info)
# Filtering - copied from DjangoFilterConnectionField.connection_resolver
filter_kwargs = {
k: v
for k, v in kwargs.items() if k in self.filtering_args
}
queryset = self.filterset_class(
data=filter_kwargs,
queryset=queryset,
).qs
# End of filtering
if isinstance(qs, list):
connection = connection_from_list(
queryset,
connection_type=self.type,
edge_type=self.type.Edge,
pageinfo_type=graphene.relay.PageInfo,
args=attr.asdict(page_query),
)
else:
connection = connection_from_cursor_paginated(
queryset,
connection_type=self.type,
edge_type=self.type.Edge,
pageinfo_type=graphene.relay.PageInfo,
page_query=page_query,
total_queryset=queryset,
)
# Post processors currently only work when the processor model is the
# topmost model, behaviour below that is undefined and may break
for processor in post_processors:
processor([edge.node for edge in connection.edges], info)
return connection
def connection_resolver(resolver, connection, root, args, context, info):
iterable = resolver(root, args, context, info)
assert isinstance(iterable, Iterable), (
'Resolved value from the connection field have to be iterable. '
'Received "{}"').format(iterable)
connection = connection_from_list(iterable,
args,
connection_type=connection,
edge_type=connection.Edge,
pageinfo_type=PageInfo)
connection.iterable = iterable
return connection
def resolve_connection(cls, connection_type, args, resolved):
if isinstance(resolved, connection_type):
return resolved
assert isinstance(resolved, Iterable), (
'Resolved value from the connection field have to be iterable or instance of {}. '
'Received "{}"').format(connection_type, resolved)
connection = connection_from_list(resolved,
args,
connection_type=connection_type,
edge_type=connection_type.Edge,
pageinfo_type=PageInfo)
connection.iterable = resolved
return connection
def resolve_connection(cls, connection_type, args, resolved):
if isinstance(resolved, connection_type):
return resolved
assert isinstance(resolved, Iterable), (
'Resolved value from the connection field have to be iterable or instance of {}. '
'Received "{}"'
).format(connection_type, resolved)
connection = connection_from_list(
resolved,
args,
connection_type=connection_type,
edge_type=connection_type.Edge,
pageinfo_type=PageInfo
)
connection.iterable = resolved
return connection
def connection_resolver(cls, resolver, connection, root, args, context,
info):
resolved = resolver(root, args, context, info)
if isinstance(resolved, connection):
return resolved
assert isinstance(resolved, Iterable), (
'Resolved value from the connection field have to be iterable or instance of {}. '
'Received "{}"').format(connection, resolved)
connection = connection_from_list(resolved,
args,
connection_type=connection,
edge_type=connection.Edge,
pageinfo_type=PageInfo)
connection.iterable = resolved
return connection
def provides_deprecated_connection_from_list():
with deprecated_call():
# noinspection PyDeprecation
c = connection_from_list(
array_abcde[:1],
args={},
connection_type=Connection,
edge_type=Edge,
pageinfo_type=PageInfo,
)
assert c == Connection(
edges=[edge_a],
pageInfo=PageInfo(
startCursor=cursor_a,
endCursor=cursor_a,
hasPreviousPage=False,
hasNextPage=False,
),
)
def resolve_connection(cls, connection_type, args, resolved):
if isinstance(resolved, connection_type):
return resolved
if not isinstance(resolved, Iterable):
raise AssertionError("""
Resolved value from the connection field have to be iterable or instance of {}.
Received "{}"
""".format(connection_type, resolved))
connection = connection_from_list(
resolved,
args,
connection_type=connection_type,
edge_type=connection_type.Edge,
pageinfo_type=PageInfo,
)
connection.iterable = resolved
return connection
def provides_deprecated_connection_from_list():
with deprecated_call():
# noinspection PyDeprecation
c = connection_from_list(
letters[:1],
args={},
connection_type=Connection,
edge_type=Edge,
pageinfo_type=PageInfo,
)
assert c == Connection(
edges=[Edge(node="A", cursor="YXJyYXljb25uZWN0aW9uOjA=")],
pageInfo=PageInfo(
startCursor="YXJyYXljb25uZWN0aW9uOjA=",
endCursor="YXJyYXljb25uZWN0aW9uOjA=",
hasPreviousPage=False,
hasNextPage=False,
),
)