How to model viewer from owner domain

[agale031176]

Is it possible to model the scenario that a viewer has to be a user and a user from the domain of owner's domain? I am trying to model it something like this:

model
  schema 1.1
type user
type domain
  relations
    define member: [user,domain#member]
type board
  relations
    define owner: [user,domain#member]
    define parent: [folder]
    define viewer:  [user, owner#domain] or owner or viewer from parent

owner#domain is not correct but I am not sure how to represent it.

[rhamzeh]

You can do something like:

model
  schema 1.1
type user
  relations
    define domain: [domain]
    define coworker: member from domain
type domain
  relations
    define member: [user]
type board
  relations
    define owner: [user]
    define parent: [folder]
    define viewer:  [user] or owner or viewer from parent
    define can_view: viewer and coworker from owner

Make sure when a user is added to a domain that you write two tuples:

- user: user:carl
  relation: member
  object: domain:contoso
- user: domain:contoso
  relation: domain
  object: user:carl

[agale031176]

Thanks this worked as I was trying to follow ContextualTuples and didn't manage.