before_create :permission_to_set_authorized_user_uuid
before_update :permission_to_set_authorized_user_uuid
- belongs_to :authorized_user, :foreign_key => :authorized_user_uuid, :class_name => 'User', :primary_key => :uuid
+ belongs_to :authorized_user,
+ foreign_key: 'authorized_user_uuid',
+ class_name: 'User',
+ primary_key: 'uuid',
+ optional: true
validate :public_key_must_be_unique