+ if params[:groups]
+ new_groups = params[:groups].split(',').map(&:strip).compact.select{|i| !i.to_s.empty?}
+ can_login_perms = Link.where(tail_uuid: params[:user_email],
+ head_kind: 'arvados#user',
+ link_class: 'permission',
+ name: 'can_login')
+ if can_login_perms.any?
+ perm = can_login_perms.first
+ props = perm.properties
+ if new_groups != props[:groups]
+ props[:groups] = new_groups
+ perm.save!
+ end
+ end
+ end
+