+ def must_unsetup_to_deactivate
+ if !self.new_record? &&
+ self.uuid[0..4] == Rails.configuration.Login.LoginCluster &&
+ self.uuid[0..4] != Rails.configuration.ClusterID
+ # OK to update our local record to whatever the LoginCluster
+ # reports, because self-activate is not allowed.
+ return
+ elsif self.is_active_changed? &&
+ self.is_active_was &&
+ !self.is_active
+
+ group = Group.where(name: 'All users').select do |g|
+ g[:uuid].match(/-f+$/)
+ end.first
+
+ # When a user is set up, they are added to the "All users"
+ # group. A user that is part of the "All users" group is
+ # allowed to self-activate.
+ #
+ # It doesn't make sense to deactivate a user (set is_active =
+ # false) without first removing them from the "All users" group,
+ # because they would be able to immediately reactivate
+ # themselves.
+ #
+ # The 'unsetup' method removes the user from the "All users"
+ # group (and also sets is_active = false) so send a message
+ # explaining the correct way to deactivate a user.
+ #
+ if Link.where(tail_uuid: self.uuid,
+ head_uuid: group[:uuid],
+ link_class: 'permission',
+ name: 'can_read').any?
+ errors.add :is_active, "cannot be set to false directly, use the 'Deactivate' button on Workbench, or the 'unsetup' API call"
+ end
+ end
+ end
+