def save_revision(self, objects, ignore_duplicates=False, user=None, comment="", meta=(), db=None):
"""Saves a new revision."""
# Get the db alias.
db = db or DEFAULT_DB_ALIAS
# Adapt the objects to a dict.
if isinstance(objects, (list, tuple)):
objects = dict(
(obj, self.get_adapter(obj.__class__).get_version_data(obj, VERSION_CHANGE, db)) for obj in objects
)
# Create the revision.
if objects:
# Follow relationships.
for obj in self._follow_relationships(objects.iterkeys()):
if not obj in objects:
adapter = self.get_adapter(obj.__class__)
objects[obj] = adapter.get_version_data(obj, VERSION_CHANGE)
# Create all the versions without saving them
ordered_objects = list(objects.iterkeys())
new_versions = [Version(**objects[obj]) for obj in ordered_objects]
# Check if there's some change in all the revision's objects.
save_revision = True
if ignore_duplicates:
# Find the latest revision amongst the latest previous version of each object.
subqueries = [
Q(object_id=version.object_id, content_type=version.content_type) for version in new_versions
]
subqueries = reduce(operator.or_, subqueries)
latest_revision = self._get_versions(db).filter(subqueries).aggregate(Max("revision"))["revision__max"]
# If we have a latest revision, compare it to the current revision.
if latest_revision is not None:
previous_versions = (
self._get_versions(db)
.filter(revision=latest_revision)
.values_list("serialized_data", flat=True)
)
if len(previous_versions) == len(new_versions):
all_serialized_data = [version.serialized_data for version in new_versions]
if sorted(previous_versions) == sorted(all_serialized_data):
save_revision = False
# Only save if we're always saving, or have changes.
if save_revision:
# Save a new revision.
revision = Revision(manager_slug=self._manager_slug, user=user, comment=comment)
# Send the pre_revision_commit signal.
pre_revision_commit.send(self, instances=ordered_objects, revision=revision, versions=new_versions)
# Save the revision.
revision.save(using=db)
# Save version models.
for version in new_versions:
version.revision = revision
version.save(using=db)
# Save the meta information.
for cls, kwargs in meta:
cls._default_manager.db_manager(db).create(revision=revision, **kwargs)
# Send the pre_revision_commit signal.
post_revision_commit.send(self, instances=ordered_objects, revision=revision, versions=new_versions)
def save_revision(self, objects, user=None, comment='', meta=(), db=None):
"""Saves a new revision."""
# Create the revision.
if objects:
# Follow relationships.
for obj, follower_type in self._follow_relationships(
((key, version_data.get('type')) for key, version_data in objects.items())
):
if not obj in objects:
adapter = self.get_adapter(obj.__class__)
follow_obj_data = adapter.get_version_data(obj)
follow_obj_data['type'] = follower_type
objects[obj] = follow_obj_data
# Create all the versions without saving them
ordered_objects = list(objects.keys())
new_versions = [Version(**objects[obj]) for obj in ordered_objects]
# Check if there's some change in all the revision's objects.
save_revision = True
# Only save if we're always saving, or have changes.
if save_revision:
# Save a new revision.
revision = Revision(
manager_slug = self._manager_slug,
user = user,
comment = comment,
)
# Send the pre_revision_commit signal.
pre_revision_commit.send(self,
instances = ordered_objects,
revision = revision,
versions = new_versions,
)
# Save the revision.
with transaction.atomic(using=db):
revision.save(using=db)
# Save version models.
for version in new_versions:
version.revision = revision
version.save()
# Save the meta information.
for cls, kwargs in meta:
cls._default_manager.db_manager(db).create(revision=revision, **kwargs)
# Send the post_revision_commit signal.
post_revision_commit.send(self,
instances = ordered_objects,
revision = revision,
versions = new_versions,
)
# Return the revision.
return revision
def save_revision(self, objects, ignore_duplicates=False, user=None, comment="", meta=(), db=None):
"""Saves a new revision."""
# Get the db alias.
db = db or DEFAULT_DB_ALIAS
# Adapt the objects to a dict.
if isinstance(objects, (list, tuple)):
objects = dict(
(obj, self.get_adapter(obj.__class__).get_version_data(obj, db))
for obj in objects
)
# Create the revision.
if objects:
# Follow relationships.
for obj in self._follow_relationships(objects.keys()):
if not obj in objects:
adapter = self.get_adapter(obj.__class__)
objects[obj] = adapter.get_version_data(obj)
# Create all the versions without saving them
ordered_objects = list(objects.keys())
new_versions = [Version(**objects[obj]) for obj in ordered_objects]
# Check if there's some change in all the revision's objects.
save_revision = True
if ignore_duplicates:
# Find the latest revision amongst the latest previous version of each object.
subqueries = [Q(object_id=version.object_id, content_type=version.content_type) for version in new_versions]
subqueries = reduce(operator.or_, subqueries)
latest_revision = self._get_versions(db).filter(subqueries).aggregate(Max("revision"))["revision__max"]
# If we have a latest revision, compare it to the current revision.
if latest_revision is not None:
previous_versions = self._get_versions(db).filter(revision=latest_revision).values_list("serialized_data", flat=True)
if len(previous_versions) == len(new_versions):
all_serialized_data = [version.serialized_data for version in new_versions]
if sorted(previous_versions) == sorted(all_serialized_data):
save_revision = False
# Only save if we're always saving, or have changes.
if save_revision:
# Save a new revision.
revision = Revision(
manager_slug = self._manager_slug,
user = user,
comment = comment,
)
# Send the pre_revision_commit signal.
pre_revision_commit.send(self,
instances = ordered_objects,
revision = revision,
versions = new_versions,
)
# Save the revision.
with transaction.atomic(using=db):
revision.save(using=db)
# Save version models.
for version in new_versions:
version.revision = revision
Version.objects.using(db).bulk_create(new_versions)
# Save the meta information.
for cls, kwargs in meta:
cls._default_manager.db_manager(db).create(revision=revision, **kwargs)
# Send the pre_revision_commit signal.
post_revision_commit.send(self,
instances = ordered_objects,
revision = revision,
versions = new_versions,
)
# Return the revision.
return revision
def save_revision(self, objects, updated=None, inserted=None, deleted=None, ignore_duplicates=False, user=None,
comment="", smart=True, meta=(), db=None):
"""Saves a new revision."""
request = current_task.request
logger.info("Executing task id {id}, args: {args} retries: {retries}".format(
id=request.id, args=request.args, retries=request.retries))
logger.info(request.kwargs)
# Get the db alias.
db = db or DEFAULT_DB_ALIAS
# Adapt the objects to a dict.
if isinstance(objects, (list, tuple)):
objects = dict(
(obj, self.get_adapter(obj.__class__).get_version_data(obj, VERSION_CHANGE, db))
for obj in objects
)
# Create the revision.
if objects:
# Follow relationships.
for obj in self._follow_relationships(objects.keys()):
if not obj in objects:
adapter = self.get_adapter(obj.__class__)
objects[obj] = adapter.get_version_data(obj, VERSION_CHANGE)
# Create all the versions without saving them
ordered_objects = list(objects.keys())
new_versions = [Version(**objects[obj]) for obj in ordered_objects]
# Check if there's some change in all the revision's objects.
save_revision = True
if ignore_duplicates:
# Find the latest revision amongst the latest previous version of each object.
subqueries = [Q(object_id=version.object_id, content_type=version.content_type)
for version in new_versions]
subqueries = reduce(operator.or_, subqueries)
latest_revision = self._get_versions(db).filter(subqueries).aggregate(Max("revision"))["revision__max"]
# If we have a latest revision, compare it to the current revision.
if latest_revision is not None:
previous_versions = (self._get_versions(db).filter(revision=latest_revision)
.values_list("serialized_data", flat=True))
if len(previous_versions) == len(new_versions):
all_serialized_data = [version.serialized_data for version in new_versions]
if sorted(previous_versions) == sorted(all_serialized_data):
save_revision = False
# Only save if we're always saving, or have changes.
if save_revision:
# Save a new revision.
if not comment and smart:
deleted_comments, inserted_comments, updated_comments = [], [], []
for deleted_instance in deleted:
deleted_comments.append(was_deleted_message.format(get_object_smart_repr(deleted_instance)))
for inserted_instance in inserted:
#here we must get the instances what was created
inserted_comments.append(was_created_message.format(get_object_smart_repr(inserted_instance)))
for serialized_updated_instance in updated:
old_instance_deserialized = deserialize(VersionAdapter.format,
serialized_updated_instance).next()
new_instance = None
change_list = []
for instance in objects:
if (old_instance_deserialized.object.__class__ == instance.__class__
and old_instance_deserialized.object.pk == instance.pk):
new_instance = instance
break
fields = sorted(new_instance._meta.fields + new_instance._meta.many_to_many,
key=lambda x: x.creation_counter)
exclude_fields = self.get_adapter(new_instance.__class__).exclude
fields = [field for field in fields if field.name not in exclude_fields]
for field in fields:
old_value, new_value = (field.value_from_object(old_instance_deserialized.object),
field.value_from_object(new_instance))
# Set false old and new values to None because of next != operator(types..)
if not old_value:
old_value = None
if not new_value:
new_value = None
if old_value != new_value:
if not isinstance(field, (AutoField, ManyToManyField)):
if isinstance(field, RelatedField):
if old_value:
value_from = get_object_smart_repr(field.rel.to.objects.get(pk=old_value))
else:
value_from = no_value_message
if new_value:
value_to = get_object_smart_repr(field.rel.to.objects.get(pk=new_value))
else:
value_to = no_value_message
change_list.append(changes_template.format(verbose_name=field.verbose_name,
value_from=value_from,
value_to=value_to))
else:
value_from = old_value if old_value else no_value_message
value_to = new_value if new_value else no_value_message
change_list.append(changes_template.format(verbose_name=field.verbose_name,
value_from=value_from,
value_to=value_to))
elif isinstance(field, ManyToManyField):
old_value = old_instance_deserialized.m2m_data[field.name]
old_value = [int(pk) for pk in old_value] if old_value else old_value
new_value = [obj.pk for obj in new_value] if new_value else new_value
if old_value:
value_from = u", ".join(get_object_smart_repr(field.rel.to.objects.get(pk=m2m_pk))
for m2m_pk in old_value)
else:
value_from = no_value_message
if new_value:
value_to = u", ".join(get_object_smart_repr(field.rel.to.objects.get(pk=m2m_pk))
for m2m_pk in new_value)
else:
value_to = no_value_message
if old_value != new_value:
change_list.append(changes_template.format(verbose_name=field.verbose_name,
value_from=value_from,
value_to=value_to))
if change_list:
object_repr = get_object_smart_repr(old_instance_deserialized.object)
change_list.insert(0, was_changed_message.format(object_repr))
if change_list:
inserted_comments_string = u"\n".join(change_list)
else:
new_instance_repr = get_object_smart_repr(new_instance)
inserted_comments_string = saved_without_changes_message.format(new_instance_repr)
inserted_comments.append(inserted_comments_string)
comment = u"\n".join(inserted_comments + updated_comments + deleted_comments)
revision = Revision(
manager_slug=self._manager_slug,
user=user,
user_string=unicode(user) if user else u"",
comment=comment,
)
# Send the pre_revision_commit signal.
pre_revision_commit.send(self,
instances=ordered_objects,
revision=revision,
versions=new_versions)
# Save the revision.
revision.save(using=db)
# Save version models.
for version in new_versions:
version.revision = revision
version.save(using=db)
# Save the meta information.
for cls, kwargs in meta:
cls._default_manager.db_manager(db).create(revision=revision, **kwargs)
# Send the pre_revision_commit signal.
post_revision_commit.send(self,
instances=ordered_objects,
revision=revision,
versions=new_versions,)
# Return the revision.
return revision