+ # If called after save...
+ changes = self.saved_changes
+ end
+ (syncable_attrs & changes.keys).each do |attr|
+ if attr == 'uuid'
+ # Point old versions to current version's new UUID
+ updates['current_version_uuid'] = changes[attr].last
+ else
+ updates[attr] = changes[attr].last
+ end
+ end
+ return updates
+ end
+
+ def sync_past_versions
+ updates = self.syncable_updates
+ Collection.where('current_version_uuid = ? AND uuid != ?', self.uuid_before_last_save, self.uuid_before_last_save).each do |c|
+ c.attributes = updates
+ # Use a different validation context to skip the 'past_versions_cannot_be_updated'
+ # validator, as on this case it is legal to update some fields.
+ leave_modified_by_user_alone do
+ leave_modified_at_alone do
+ c.save(context: :update_old_versions)
+ end
+ end
+ end
+ end
+
+ def versionable_updates?(attrs)
+ (['manifest_text', 'description', 'properties', 'name'] & attrs).any?
+ end
+
+ def syncable_attrs
+ ['uuid', 'owner_uuid', 'delete_at', 'trash_at', 'is_trashed', 'replication_desired', 'storage_classes_desired']
+ end
+
+ def is_past_version?
+ # Check for the '_was' values just in case the update operation
+ # includes a change on current_version_uuid or uuid.
+ !(new_record? || self.current_version_uuid_was == self.uuid_was)
+ end
+
+ def should_preserve_version?
+ return false unless (Rails.configuration.Collections.CollectionVersioning && versionable_updates?(self.changes.keys))
+
+ return false if self.is_trashed
+
+ idle_threshold = Rails.configuration.Collections.PreserveVersionIfIdle
+ if !self.preserve_version_was &&
+ !self.preserve_version &&
+ (idle_threshold < 0 ||
+ (idle_threshold > 0 && self.modified_at_was > db_current_time-idle_threshold.seconds))
+ return false
+ end
+ return true
+ end
+
+ def check_encoding
+ if !(manifest_text.encoding.name == 'UTF-8' and manifest_text.valid_encoding?)