Approval

submit waits until title and body are present. approve waits until two approvals are recorded and the author is someone other than the requester. reject waits for a reason.

app approvals "Approvals" {}

entity Article {
  title:     text
  body:      longtext
  approvals: number
  author:    text
  requester: text
  reason:    text

  workflow {
    initial Draft
    states Draft, Review, Approved, Rejected
    terminal Approved, Rejected

    submit:  Draft -> Review requires title, body
    approve: Review -> Approved when approvals >= 2 and author != requester
    reject:  Review -> Rejected requires reason
  }
}