def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = {}
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision[obj] = version
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
current_revision = RevisionManager.get_manager(self.manager_slug)._follow_relationships(old_revision.keys())
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item in old_revision:
if old_revision[item].type == VERSION_DELETE:
item.delete()
else:
item.delete()
# Attempt to revert all revisions.
safe_revert([version for version in version_set if version.type != VERSION_DELETE])
def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = {}
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(
version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision[obj] = version
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
current_revision = RevisionManager.get_manager(
self.manager_slug)._follow_relationships(
obj for obj in old_revision.keys() if obj is not None)
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item not in old_revision:
item.delete()
# Attempt to revert all revisions.
safe_revert(version_set)
def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = set()
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision.add(obj)
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
current_revision = RevisionManager.get_manager(self.manager_slug)._follow_relationships(
obj for obj in old_revision if obj is not None
)
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item not in old_revision:
item.delete()
# Attempt to revert all revisions.
safe_revert(version_set)
def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = {}
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision[obj] = version
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
manager = RevisionManager.get_manager(self.manager_slug)
current_revision = manager._follow_relationships(obj for obj in old_revision.keys() if obj is not None)
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item._get_pk_val():
try:
if item in old_revision:
if old_revision[item].type == VERSION_DELETE:
item.delete()
else:
item.delete()
except (ObjectDoesNotExist, AssertionError): # assert with Pk none.
continue
# Attempt to revert all revisions.
versions = [version for version in version_set if version.type != VERSION_DELETE]
safe_revert(versions)
reverted.send(sender=self, revision=self, versions=versions)
def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = {}
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(
version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision[obj] = version
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
current_revision = RevisionManager.get_manager(
self.manager_slug)._follow_relationships(old_revision.keys())
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item in old_revision:
if old_revision[item].type == VERSION_DELETE:
item.delete()
else:
item.delete()
# Attempt to revert all revisions.
def do_revert(versions):
unreverted_versions = []
for version in versions:
try:
version.revert()
except IntegrityError:
unreverted_versions.append(version)
if len(unreverted_versions) == len(versions):
raise RevertError(
"Could not revert revision, due to database integrity errors."
)
if unreverted_versions:
do_revert(unreverted_versions)
do_revert([
version for version in version_set
if version.type != VERSION_DELETE
])
def handle(self, *app_labels, **options):
# Activate project's default language
translation.activate(settings.LANGUAGE_CODE)
# Load admin classes.
admin.autodiscover()
# Parse options.
comment = options["comment"]
batch_size = options["batch_size"]
revision_manager = RevisionManager.get_manager(options["manager"])
database = options["database"]
verbosity = int(options.get("verbosity", 1))
model_classes = parse_app_labels(revision_manager, app_labels)
# Create revisions.
with transaction.atomic(using=database):
for model_class in model_classes:
self.create_initial_revisions(model_class, comment, batch_size, verbosity, revision_manager, database)
# Go back to default language
translation.deactivate()
def handle(self, *app_labels, **options):
# Activate project's default language
translation.activate(settings.LANGUAGE_CODE)
# Load admin classes.
admin.autodiscover()
# Parse options.
comment = options["comment"]
batch_size = options["batch_size"]
revision_manager = RevisionManager.get_manager(options["manager"])
database = options["database"]
verbosity = int(options.get("verbosity", 1))
model_classes = parse_app_labels(revision_manager, app_labels)
# Create revisions.
with transaction.atomic(using=database):
for model_class in model_classes:
self.create_initial_revisions(model_class, comment, batch_size,
verbosity, revision_manager,
database)
# Go back to default language
translation.deactivate()
def object_version(self):
"""The stored version of the model."""
data = self.serialized_data
data = force_text(data.encode("utf8"))
obj = self.object
reverted_obj = list(
serializers.deserialize(self.format, data,
ignorenonexistent=True))[0]
from reversion.revisions import RevisionManager
manager = RevisionManager.get_manager(self.revision.manager_slug)
fields = manager.get_adapter(self.content_type.model_class()).fields
for field in fields:
setattr(obj, field, getattr(reverted_obj.object, field))
reverted_obj.object = obj
return reverted_obj
def revert(self, delete=False):
"""Reverts all objects in this revision."""
version_set = self.version_set.all()
# Optionally delete objects no longer in the current revision.
if delete:
# Get a dict of all objects in this revision.
old_revision = {}
for version in version_set:
try:
obj = version.object
except ContentType.objects.get_for_id(version.content_type_id).model_class().DoesNotExist:
pass
else:
old_revision[obj] = version
# Calculate the set of all objects that are in the revision now.
from reversion.revisions import RevisionManager
current_revision = RevisionManager.get_manager(self.manager_slug)._follow_relationships(old_revision.keys())
# Delete objects that are no longer in the current revision.
for item in current_revision:
if item in old_revision:
if old_revision[item].type == VERSION_DELETE:
item.delete()
else:
item.delete()
# Attempt to revert all revisions.
def do_revert(versions):
unreverted_versions = []
for version in versions:
try:
version.revert()
except IntegrityError:
unreverted_versions.append(version)
if len(unreverted_versions) == len(versions):
raise RevertError("Could not revert revision, due to database integrity errors.")
if unreverted_versions:
do_revert(unreverted_versions)
do_revert([version for version in version_set if version.type != VERSION_DELETE])
def revision_manager(self):
return RevisionManager.get_manager(self.manager_slug)
def handle(self, *app_labels, **options):
days = options["days"]
keep = options["keep"]
force = options["force"]
interactive = options["interactive"]
# Load admin classes.
admin.autodiscover()
# Check for deprecated confirmation option.
if not options["confirmation"]:
interactive = False
warnings.warn(
(
"--no-confirmation is deprecated, please use --no-input instead. "
"--no-confirmation will be removed in django-reversion 1.12.0"
),
DeprecationWarning
)
revision_manager = RevisionManager.get_manager(options["manager"])
database = options.get("database")
verbosity = int(options.get("verbosity", 1))
# Parse date.
date = None
if options["date"]:
if days:
raise CommandError("You cannot use --date and --days at the same time. They are exclusive.")
try:
date = datetime.datetime.strptime(options["date"], "%Y-%m-%d").date()
except ValueError:
raise CommandError((
"The date you gave (%s) is not a valid date. ",
"The date should be in the ISO format (YYYY-MM-DD)."
) % options["date"])
# Find the date from the days arguments.
elif days:
date = datetime.date.today() - datetime.timedelta(days)
# Build the queries
revision_query = Revision.objects.using(database).filter(
manager_slug=revision_manager._manager_slug,
)
if date:
revision_query = revision_query.filter(date_created__lt=date)
if app_labels:
model_classes = parse_app_labels(revision_manager, app_labels)
content_types = [
revision_manager._get_content_type(model_class, db=database)
for model_class
in model_classes
]
revision_query = revision_query.filter(version__content_type__in=content_types)
if not force:
excluded_content_types = ContentType.objects.db_manager(database).exclude(pk__in=[
content_type.pk
for content_type
in content_types
])
revision_query = revision_query.exclude(version__content_type__in=excluded_content_types)
# Handle keeping n versions.
if keep:
objs = Version.objects.using(database).filter(
revision__manager_slug=revision_manager._manager_slug,
revision__in=revision_query,
)
# Get all the objects that have more than the maximum revisions.
objs = objs.values("object_id", "content_type_id", "db").annotate(
total_ver=Count("object_id"),
).filter(total_ver__gt=keep)
# Get all ids of the oldest revisions minus the max allowed revisions for all objects.
revisions_not_kept = set()
for obj in objs:
revisions_not_kept.update(list(Version.objects.using(database).filter(
content_type__id=obj["content_type_id"],
object_id=obj["object_id"],
db=obj["db"],
).order_by("-pk").values_list("revision_id", flat=True)[keep:]))
revision_query = revision_query.filter(pk__in=revisions_not_kept)
revision_count = revision_query.count()
# Ask confirmation
if interactive:
choice = input("Are you sure you want to delete %s revisions? [y|N] " % revision_count)
if choice.lower() != "y":
self.stdout.write("Aborting revision deletion.")
return
# Delete versions and revisions
if verbosity >= 2:
self.stdout.write("Deleting %s revisions..." % revision_count)
# Delete the revisions.
with transaction.atomic(using=database):
revision_query.delete()
# Final logging.
if verbosity >= 2:
self.stdout.write("Deleted %s revisions." % revision_count)