search for: documents_us

...id, name, content, owner_id). A document can have many users, because we are implementing a collaboration feature, but only one owner. The owner will have administrative rights over the document (add collaborators, delete, etc). Users will only be able to edit the document. The thing is, we need a documents_users table to handle the many-to-many relationship. We do not know how to handle the owner, though, because in essence the owner is also a user. Do we need to implement an Owner model? Or can Rails handle two different types of relationships between a couple of models? In any case, should we still...