def delete(self, *args, **kwargs):
if self.recipient_count() > 0:
raise ProtectedError("BadgeClass may only be deleted if all BadgeInstances have been revoked.", self)
if self.pathway_element_count() > 0:
raise ProtectedError("BadgeClass may only be deleted if all PathwayElementBadge have been removed.", self)
if len(self.cached_completion_elements()) > 0:
raise ProtectedError("Badge could not be deleted. It is being used as a pathway completion badge.", self)
issuer = self.issuer
super(BadgeClass, self).delete(*args, **kwargs)
issuer.publish()
def disable(self):
if self.disabled:
raise ProtectedError(gettext('This question is already disabled.'), [self])
if PollFormLineCondition.objects.filter(source=self).exists():
raise ProtectedError(gettext('There is at least one other question '
'which depends on this question.'
),
[self],
)
self.disabled = True
self.conditions.all().delete()
self.save()
def delete(self, *args, **kwargs):
"""
Recursive delete function that
- deletes all children
- only publishes the parent of the initially deleted entity
- removes all associated staff memberships without publishing the associated object (the one that is deleted)
"""
publish_parent = kwargs.pop('publish_parent', True)
if self.assertions:
raise ProtectedError(
"{} may only be deleted if there are no awarded Assertions.".
format(self.__class__.__name__), self)
try: # first the children
kids = self.children
for child in kids:
child.delete(publish_parent=False)
except AttributeError: # no kids
pass
for membership in self.staff_items:
membership.delete(publish_object=False)
ret = super(PermissionedModelMixin, self).delete(*args, **kwargs)
if publish_parent:
try:
self.parent.publish()
except AttributeError: # no parent
pass
return ret
def protect_news_group_all(sender, instance, using, **kwargs):
if instance.title != settings.NEWS_GROUP_ALL_TITLE:
pass
else:
raise ProtectedError(protected_objects=instance,
msg='دستۀ «' + settings.NEWS_GROUP_ALL_TITLE +
'» را نمیتوان حذف کرد.')
def delete(self, *args, **kwargs):
if self.recipient_count() > 0:
raise ProtectedError("BadgeClass may only be deleted if all BadgeInstances have been revoked.")
issuer = self.issuer
super(BadgeClass, self).delete(*args, **kwargs)
issuer.publish()
def delete(self, *args, **kwargs):
if self.recipient_count > 0:
raise ProtectedError(
"Issuer can not be deleted because it has previously issued badges.",
self)
# remove any unused badgeclasses owned by issuer
for bc in self.cached_badgeclasses():
bc.delete()
staff = self.cached_issuerstaff()
ret = super(Issuer, self).delete(*args, **kwargs)
# remove membership records
for membership in staff:
membership.delete(publish_issuer=False)
if apps.is_installed('badgebook'):
# badgebook shim
try:
from badgebook.models import LmsCourseInfo
# update LmsCourseInfo's that were using this issuer as the default_issuer
for course_info in LmsCourseInfo.objects.filter(
default_issuer=self):
course_info.default_issuer = None
course_info.save()
except ImportError:
pass
return ret
def db_for_write(self, model, **hints):
"""
Prevent write access to the coursera database.
"""
raise ProtectedError(
"No write access to 'coursera' database.", [hints.get("instance")]
)
def check_detail_configuration(brick_id: str):
locations = BrickDetailviewLocation.objects.filter(brick_id=brick_id)
if locations:
def get_message():
for loc in locations:
if loc.content_type is None:
return gettext(
'This block is used in the default detail-view configuration'
)
for loc in locations:
if not loc.superuser and loc.role is None:
return gettext(
'This block is used in the detail-view configuration of «{model}»'
).format(model=loc.content_type)
for loc in locations:
if loc.superuser:
return gettext(
'This block is used in the detail-view configuration '
'of «{model}» for superusers'
).format(model=loc.content_type)
for loc in locations:
if loc.role is not None:
return gettext(
'This block is used in the detail-view configuration '
'of «{model}» for role «{role}»'
).format(model=loc.content_type, role=loc.role)
return 'This block is used in a detail-view configuration (unexpected case)'
raise ProtectedError(get_message(), [*locations])
def delete(self):
if self.ingredient_set.all().exclude(step=None).count() > 0:
raise ProtectedError(
self.name +
_(" is part of a recipe step and cannot be deleted"),
self.ingredient_set.all().exclude(step=None))
else:
return super().delete()
def delete(self, *args, **kwargs):
if not self.disabled and PollFormLineCondition.objects.filter(source=self).exists():
raise ProtectedError(gettext('There is at least one other '
'question which depends on this question.'
),
[self],
)
super().delete(*args, **kwargs)
def delete(self, *args, **kwargs): # pylint: disable=arguments-differ
"""
Delete this email notification channel.
"""
if not self.shared:
newrelic.delete_email_notification_channel(self.id)
super().delete(*args, **kwargs)
else:
raise ProtectedError('Cannot delete a shared email notification channel', self)
def protect_emailuserhandler_to_ident_field(sender, instance, raw, **kwargs):
from django.db.models import ProtectedError
for child in instance.parent_form.depth_first_order():
if isinstance(child,
EmailUserHandler) and child.to_ident == instance.ident:
raise ProtectedError(
"This cannot be deleted because it is being referenced by a %s."
% (child.display_name, ), [child])
def delete(self, *args, **kwargs):
"""Deletes a user instance.
Trying to delete a meta user raises the `ProtectedError` exception.
"""
if self.is_meta:
raise ProtectedError('Cannot remove meta user instances', None)
super(User, self).delete(*args, **kwargs)
def delete(self, *args, **kwargs):
if len(self.cached_badgeclasses()) > 0:
raise ProtectedError("Issuer may only be deleted after all its defined BadgeClasses have been deleted.")
staff = self.cached_staff()
owner = self.owner
super(Issuer, self).delete(*args, **kwargs)
owner.publish()
for member in staff:
member.publish()
def prevent_deletion_if_in_use(sender, instance, **kwargs):
if isinstance(instance,
(AbstractIonDocument, AbstractIonImage, AbstractIonMedia)):
usage = instance.get_usage()
if usage:
model_name = instance.__class__.__name__
raise ProtectedError(
f"Cannot delete instance of model '{model_name}' because it is referenced in stream field blocks",
usage,
)
def prevent_slide_deletion(sender, instance, using, **_):
del sender, using
date_send = instance.sent
if date_send:
date_now = datetime.now(timezone.utc)
if (date_now - date_send) < timedelta(days=21):
raise ProtectedError(
'Slides must be stored for 21 days due to legal requirements',
instance)
def protect_containers(sender, instance, using, **kwargs):
'''The root (container) may not be deleted. If a container is deleted, it's
modules are moved to the parent.
'''
# Don't allow delete of the root container
if not instance.parent:
raise ProtectedError('A root container may not be deleted')
# Move any modules belonging to the container to parent container.
for module in instance.module_set.all():
module.container = instance.parent
module.save()
def delete(self, *args, **kwargs):
# Check for LAG interfaces split across member chassis
interfaces = Interface.objects.filter(
device__in=self.members.all(),
lag__isnull=False).exclude(lag__device=F('device'))
if interfaces:
raise ProtectedError(
f"Unable to delete virtual chassis {self}. There are member interfaces which form a cross-chassis LAG",
interfaces)
return super().delete(*args, **kwargs)
def test_protected_error() -> None:
response = exception_handler(
ProtectedError("Resource 'Hedgehog' has dependencies.",
protected_objects=[1]))
assert response is not None
assert response.status_code == status.HTTP_409_CONFLICT
assert response.data == {
"type": "invalid_request",
"code": "protected_error",
"detail": "Requested operation cannot be completed because"
" a related object is protected.",
"attr": None,
}
def process_obj(self, obj, cascade_type, related_column):
if cascade_type == "SET_NULL":
setattr(obj, related_column, None)
obj.save()
elif cascade_type == "CASCADE":
if hasattr(obj, "soft_delete"):
obj.soft_delete()
else:
obj.delete()
elif cascade_type == "PROTECT":
raise ProtectedError("", related_column)
else:
raise NotImplementedError()
def delete(self, *args, **kwargs):
from ..utils import SectionTree
section_id = self.id
for node in SectionTree(self.pform):
if node.is_section and node.id == section_id:
if not node.has_line: break
raise ProtectedError(
gettext('There is at least one question in this section.'),
[self],
)
super().delete(*args, **kwargs)
def delete(self, **kwargs):
# Do not allow deletion if this dataset is referenced by other datasets
linking_fields = ReferenceDatasetField.objects.filter(
linked_reference_dataset=self
)
if linking_fields.count() > 0:
raise ProtectedError(
'Cannot delete reference dataset as it is linked to by other datasets',
set(x.reference_dataset for x in linking_fields),
)
# Delete external table when ref dataset is deleted
if self.external_database is not None:
self._drop_external_database_table(self.external_database.memorable_name)
super().delete(**kwargs)
def check_on_going_upload(sender, instance, **kwargs):
if instance.status == AssetUpload.Status.IN_PROGRESS:
logger.error(
"Cannot delete asset %s due to upload %s which is still in progress",
instance.asset.name,
instance.upload_id,
extra={
'upload_id': instance.upload_id,
'asset': instance.asset.name,
'item': instance.asset.item.name,
'collection': instance.asset.item.collection.name
})
raise ProtectedError(
f"Asset {instance.asset.name} has still an upload in progress",
[instance])
def process_queryset(self, related_manager, cascade_type, related_column):
data = {related_column: None}
queryset = related_manager.all()
if cascade_type == "SET_NULL":
related_manager.update(**data)
elif cascade_type == "CASCADE":
if isinstance(queryset, SoftDeleteQuerySet):
queryset.soft_delete()
else:
queryset.delete()
elif cascade_type == "PROTECT":
if queryset.count() > 0:
raise ProtectedError("", related_column)
else:
raise NotImplementedError()
def delete(self, *args, **kwargs):
"""Deletes a user instance.
Trying to delete a meta user raises the `ProtectedError` exception.
"""
if self.is_meta:
raise ProtectedError('Cannot remove meta user instances', None)
purge = kwargs.pop("purge", False)
if purge:
UserPurger(self).purge()
else:
UserMerger(self, User.objects.get_nobody_user()).merge()
super(User, self).delete(*args, **kwargs)
def check_mypage_configuration(brick_id: str):
locations = BrickMypageLocation.objects.filter(brick_id=brick_id)
if locations:
if any(mpl.user is None for mpl in locations):
msg = gettext(
'This block is used in the default configuration for "My page"'
)
else:
for mpl in locations:
if mpl.user:
msg = gettext(
'This block is used in the configuration of «{}» for "My page"'
).format(mpl.user)
break
else:
msg = 'This block is used in the "My page" configuration (unexpected case)'
raise ProtectedError(msg, [*locations])
def _on_delete(self):
for relation in self._meta._relation_tree:
on_delete = getattr(relation.remote_field, 'on_delete')
if on_delete in [None, models.DO_NOTHING]:
continue
filter = {relation.name: self}
related_queryset = relation.model.objects.filter(**filter)
if on_delete == models.CASCADE:
relation.model.objects.filter(**filter).delete()
elif on_delete == models.SET_NULL:
for r in related_queryset.all():
related_queryset.update(**{relation.name: None})
elif on_delete == models.PROTECT:
if related_queryset.count() > 0:
raise ProtectedError('Cannot remove this instances',
related_queryset.all())
else:
raise NotImplementedError()
def test_delete_protected_folder(rf, admin_user):
shop = get_default_shop()
folder1 = get_or_create_folder(shop, printable_gibberish(), admin_user)
folder2 = get_or_create_folder(shop, printable_gibberish(), admin_user)
folder2.parent = folder1
folder2.save()
with mock.patch(
"filer.models.foldermodels.Folder.delete",
side_effect=ProtectedError("Cannot delete", [folder2]),
) as mocked:
mbv_command(admin_user, {"action": "delete_folder", "id": folder2.pk})
mocked.assert_called()
folder1 = Folder.objects.get(pk=folder1.pk)
assert list(folder1.get_children()) == [folder2]
mbv_command(admin_user, {"action": "delete_folder", "id": folder2.pk})
folder1 = Folder.objects.get(pk=folder1.pk)
assert list(folder1.get_children()) == []
assert not Folder.objects.filter(pk=folder2.pk).exists()
def post(self, request, **kwargs):
#post delete the obj
obj = self.get_object(kwargs)
form = ComfirmationForm(request.POST)
if form.is_valid():
try:
obj.delete()
except ProtectedError:
raise ProtectedError(
self.model,
"the obj can't delete, because the model is protected!")
msg = "Deleted {} {}".format(self.model._meta.verbose_name, obj)
messages.success(request, msg)
return redirect(self.get_return_url(request, obj))
return render(
request, self.template_name, {
'obj': obj,
'form': form,
'obj_type': self.model._meta.verbose_name,
'return_url': self.get_return_url(request, obj),
})
def check_home_configuration(brick_id: str):
locations = BrickHomeLocation.objects.filter(brick_id=brick_id)
if locations:
if any(not hl.superuser and hl.role is None for hl in locations):
msg = gettext(
'This block is used in the default Home configuration'
)
elif any(hl.superuser for hl in locations):
msg = gettext(
'This block is used in the Home configuration for superusers'
)
else:
for hl in locations:
if hl.role:
msg = gettext(
'This block is used in the Home configuration of role «{}»'
).format(hl.role)
break
else:
msg = 'This block is used in the Home configuration (unexpected case)'
raise ProtectedError(msg, [*locations])
