def test__ids_does_not_exist__only_deletes_relevant_objects(self):
# This registers the UserNode type
# noinspection PyUnresolvedReferences
from .schema import UserNode
class BatchDeleteUserMutation(DjangoBatchDeleteMutation):
class Meta:
model = User
class Mutations(graphene.ObjectType):
batch_delete_user = BatchDeleteUserMutation.Field()
users = UserFactory.create_batch(10)
selection = random.sample(users, k=5)
non_existing_ids = list(range(-1, -5))
ids_to_delete = [user.id for user in selection] + non_existing_ids
schema = Schema(mutation=Mutations)
mutation = """
mutation BatchDeleteUser(
$ids: [ID]!,
){
batchDeleteUser(ids: $ids){
deletedIds
missedIds
deletionCount
}
}
"""
result = schema.execute(
mutation,
variables={"ids": ids_to_delete},
)
data = Dict(result.data)
self.assertEqual(5, data.batchDeleteUser.deletionCount)
self.assertListEqual(
list(sorted([str(user.id) for user in selection])),
list(sorted(disambiguate_ids(data.batchDeleteUser.deletedIds))),
)
self.assertListEqual(
non_existing_ids,
list(sorted(disambiguate_ids(data.batchDeleteUser.missedIds))),
)
def mutate(cls, root, info, ids):
cls.before_mutate(root, info, ids)
if cls._meta.login_required and not info.context.user.is_authenticated:
raise GraphQLError("Must be logged in to access this mutation.")
cls.check_permissions(root, info, ids)
Model = cls._meta.model
ids = disambiguate_ids(ids)
cls.validate(root, info, ids)
qs_to_delete = cls.get_queryset(root, info, ids).filter(id__in=ids)
updated_qs = cls.before_save(root, info, qs_to_delete)
if updated_qs:
qs_to_delete = updated_qs
# Find out which (global) ids are deleted, and which were not found.
deleted_ids = [
to_global_id(
get_global_registry().get_type_for_model(Model).__name__, id)
for id in qs_to_delete.values_list("id", flat=True)
]
all_global_ids = [
to_global_id(
get_global_registry().get_type_for_model(Model).__name__, id)
for id in ids
]
missed_ids = list(set(all_global_ids).difference(deleted_ids))
deletion_count, _ = qs_to_delete.delete()
cls.after_mutate(root, info, deletion_count, deleted_ids)
return cls(deletion_count=deletion_count,
deleted_ids=deleted_ids,
missed_ids=missed_ids)
def mutate(cls, root, info, input):
updated_input = cls.before_mutate(root, info, input)
if updated_input:
input = updated_input
if cls._meta.login_required and not info.context.user.is_authenticated:
raise GraphQLError("Must be logged in to access this mutation.")
cls.check_permissions(root, info, input)
Model = cls._meta.model
model_field_values = {}
for name, value in super(type(input), input).items():
filter_field_split = name.split("__", 1)
field_name = filter_field_split[0]
try:
field = Model._meta.get_field(field_name)
except FieldDoesNotExist:
# This can happen with nested selectors. In this case we set the field to none.
field = None
filter_field_is_list = False
if len(filter_field_split) > 1:
# If we have an "__in" final part of the filter, we are now dealing with
# a list of things. Note that all other variants can be coerced directly
# on the filter-call, so we don't really have to deal with other cases.
filter_field_is_list = filter_field_split[-1] == "in"
new_value = value
value_handle_name = "handle_" + name
if hasattr(cls, value_handle_name):
handle_func = getattr(cls, value_handle_name)
assert callable(
handle_func
), f"Property {value_handle_name} on {cls.__name__} is not a function."
new_value = handle_func(value, name, info)
# On some fields we perform some default conversion, if the value was not transformed above.
if new_value == value and value is not None:
if type(field) in (models.ForeignKey, models.OneToOneField):
name = getattr(field, "db_column", None) or name + "_id"
new_value = disambiguate_id(value)
elif (
type(field)
in (
models.ManyToManyField,
models.ManyToManyRel,
models.ManyToOneRel,
)
or filter_field_is_list
):
new_value = disambiguate_ids(value)
model_field_values[name] = new_value
filter_qs = cls.get_queryset(root, info, input).filter(**model_field_values)
updated_qs = cls.before_save(root, info, filter_qs)
if updated_qs:
filter_qs = updated_qs
ids = [
to_global_id(get_global_registry().get_type_for_model(Model).__name__, id)
for id in filter_qs.values_list("id", flat=True)
]
deletion_count, _ = filter_qs.delete()
cls.after_mutate(root, info, deletion_count, ids)
return cls(deletion_count=deletion_count, deleted_ids=ids)
def update_obj(
cls,
obj,
input,
info,
auto_context_fields,
many_to_many_extras,
foreign_key_extras,
many_to_one_extras,
one_to_one_extras,
Model,
):
many_to_many_to_add = {}
many_to_many_to_remove = {}
many_to_many_to_set = {}
many_to_one_to_add = {}
many_to_one_to_remove = {}
many_to_one_to_set = {}
many_to_many_extras_field_names = get_m2m_all_extras_field_names(
many_to_many_extras)
many_to_one_extras_field_names = get_m2m_all_extras_field_names(
many_to_one_extras) # The layout is the same as for m2m
foreign_key_extras_field_names = get_fk_all_extras_field_names(
foreign_key_extras)
for field_name, context_name in auto_context_fields.items():
if hasattr(info.context, context_name):
setattr(obj, field_name, getattr(info.context, context_name))
for name, value in super(type(input), input).items():
# Handle these separately
if (name in many_to_many_extras_field_names
or name in foreign_key_extras_field_names
or name in many_to_one_extras_field_names):
continue
field = Model._meta.get_field(name)
new_value = value
# We have to handle this case specifically, by using the fields
# .set()-method, instead of direct assignment
field_is_many_to_many = is_field_many_to_many(field)
field_is_one_to_one = is_field_one_to_one(field)
value_handle_name = "handle_" + name
if hasattr(cls, value_handle_name):
handle_func = getattr(cls, value_handle_name)
assert callable(
handle_func
), f"Property {value_handle_name} on {cls.__name__} is not a function."
new_value = handle_func(value, name, info)
# On some fields we perform some default conversion, if the value was not transformed above.
if new_value == value and value is not None:
if isinstance(field, models.AutoField):
new_value = disambiguate_id(value)
elif isinstance(field, models.OneToOneField):
# If the value is an integer or a string, we assume it is an ID
if isinstance(value, str) or isinstance(value, int):
name = getattr(field, "db_column",
None) or name + "_id"
new_value = disambiguate_id(value)
else:
extra_data = one_to_one_extras.get(name, {})
# This is a nested field we need to take care of.
value[field.remote_field.name] = obj.id
new_value = cls.create_or_update_one_to_one_relation(
obj, field, value, extra_data, info)
elif isinstance(field, models.OneToOneRel):
# If the value is an integer or a string, we assume it is an ID
if isinstance(value, str) or isinstance(value, int):
name = getattr(field, "db_column",
None) or name + "_id"
new_value = disambiguate_id(value)
else:
extra_data = one_to_one_extras.get(name, {})
# This is a nested field we need to take care of.
value[field.field.name] = obj.id
new_value = cls.create_or_update_one_to_one_relation(
obj, field, value, extra_data, info)
elif isinstance(field, models.ForeignKey):
# Delete auto context field here, if it exists. We have to do this explicitly
# as we change the name below
if name in auto_context_fields:
setattr(obj, name, None)
name = getattr(field, "db_column", None) or name + "_id"
new_value = disambiguate_id(value)
elif field_is_many_to_many:
new_value = disambiguate_ids(value)
if field_is_many_to_many:
many_to_many_to_set[name] = new_value
else:
setattr(obj, name, new_value)
# Handle extras fields
for name, extras in foreign_key_extras.items():
value = input.get(name, None)
field = Model._meta.get_field(name)
obj_id = cls.get_or_create_foreign_obj(field, value, extras, info)
setattr(obj, name + "_id", obj_id)
for name, extras in many_to_many_extras.items():
field = Model._meta.get_field(name)
if not name in many_to_many_to_add:
many_to_many_to_add[name] = []
many_to_many_to_remove[name] = []
many_to_many_to_set[
name] = None # None means that we should not (re)set the relation.
for extra_name, data in extras.items():
field_name = name
if extra_name != "exact":
field_name = name + "_" + extra_name
values = input.get(field_name, None)
if isinstance(data, bool):
data = {}
operation = data.get(
"operation") or get_likely_operation_from_name(extra_name)
objs = cls.get_or_create_m2m_objs(field, values, data,
operation, info)
if operation == "exact":
many_to_many_to_set[name] = objs
elif operation == "add":
many_to_many_to_add[name] += objs
else:
many_to_many_to_remove[name] += objs
for name, extras in many_to_one_extras.items():
field = Model._meta.get_field(name)
if not name in many_to_one_to_add:
many_to_one_to_add[name] = []
many_to_one_to_remove[name] = []
many_to_one_to_set[
name] = None # None means that we should not (re)set the relation.
for extra_name, data in extras.items():
field_name = name
if extra_name != "exact":
field_name = name + "_" + extra_name
values = input.get(field_name, None)
if values is None:
continue
if isinstance(data, bool):
data = {}
operation = data.get(
"operation") or get_likely_operation_from_name(extra_name)
if operation == "exact":
objs = cls.get_or_upsert_m2o_objs(obj, field, values, data,
operation, info, Model)
many_to_one_to_set[name] = objs
elif operation == "add" or operation == "update":
objs = cls.get_or_upsert_m2o_objs(obj, field, values, data,
operation, info, Model)
many_to_one_to_add[name] += objs
else:
many_to_one_to_remove[name] += disambiguate_ids(values)
for name, objs in many_to_one_to_set.items():
if objs is not None:
field = getattr(obj, name)
if hasattr(field, "remove"):
# In this case, the relationship is nullable, and we can clear it, and then add the relevant objects
field.clear()
field.add(*objs)
else:
# Remove the related objects by deletion, and set the new ones.
field.exclude(id__in=[obj.id for obj in objs]).delete()
getattr(obj, name).add(*objs)
for name, objs in many_to_one_to_add.items():
getattr(obj, name).add(*objs)
for name, objs in many_to_one_to_remove.items():
field = getattr(obj, name)
if hasattr(field, "remove"):
# The field is nullable, and we simply remove the relation
related_name = Model._meta.get_field(name).remote_field.name
getattr(
obj,
name).filter(id__in=objs).update(**{related_name: None})
else:
# Only nullable foreign key reverse rels have the remove method.
# For other's we have to delete the relations
getattr(obj, name).filter(id__in=objs).delete()
for name, objs in many_to_many_to_set.items():
if objs is not None:
getattr(obj, name).set(objs)
for name, objs in many_to_many_to_add.items():
getattr(obj, name).add(*objs)
for name, objs in many_to_many_to_remove.items():
getattr(obj, name).remove(*objs)
return obj
def resolve_ids(cls, ids):
return disambiguate_ids(ids)
