schema.graphql

type Traveller {
  id: ID!
  createdAt: DateTime!
  updatedAt: DateTime!
  name: String!
  location: Location! @relation(name: "TravellerLocation")
  messages: [Message!]! @relation(name: "MessagesFromTraveller")
}
type Message {
  id: ID!
  createdAt: DateTime!
  updatedAt: DateTime!
  text: String!
  sentBy: Traveller!  @relation(name: "MessagesFromTraveller")
}
type Location {
  id: ID!
  createdAt: DateTime!
  updatedAt: DateTime!
  traveller: Traveller! @relation(name: "TravellerLocation")
  latitude: Float!
  longitude: Float!
}