dgraph troubles

_README.md

See the README at the original gist: https://gist.github.com/mjpitz/0df6fd7982129ed620100423ced921ef

addCloud.graphql

mutation {
  addCloud(input: [
    {
      name: "aws",
      regions: [
        {
          name: "us-west-1",
          zones: [
            {name: "us-west-1a"},
            {name: "us-west-1b"},
            {name: "us-west-1c"}
          ]
        }
      ]
    }
  ]) {
    cloud {
      name
      regions {
        name
        zones {
          name
        }
      }
    }
  }
}

getCloud.graphql

{
  getCloud(name: "aws") {
    name
    regions {
      name
      zones {
        name
      }
    }
  }
}

query.gql

query {
    cloud(func: eq(cloud.name, "aws")) {
        cloud.name
    
        cloud.regions {
            region.name
    
            region.zones {
                zone.name
            }
        }
    }
}

schema.gql

type Cloud @dgraph(type: "cloud") {
    id: ID!
    name: String! @id
    regions: [Region!]! @hasInverse(field: cloud)
}

type Region @dgraph(type: "region") {
    id: ID!
    name: String! @id
    cloud: Cloud!
    zones: [Zone!]! @hasInverse(field: region)
}

type Zone @dgraph(type: "zone") {
    id: ID!
    name: String! @id
    region: Region!
}

seed.rdf

{
    set {
        _:aws <dgraph.type> "cloud" .
        _:aws <cloud.name> "aws" .
        _:aws <cloud.regions> _:us-west-1 .

        _:us-west-1 <dgraph.type> "region" .
        _:us-west-1 <region.name> "us-west-1" .
        _:us-west-1 <region.cloud> _:aws .
        _:us-west-1 <region.zones> _:us-west-1a .
        _:us-west-1 <region.zones> _:us-west-1b .
        _:us-west-1 <region.zones> _:us-west-1c .

        _:us-west-1a <dgraph.type> "zone" .
        _:us-west-1a <zone.name> "us-west-1a" .
        _:us-west-1a <zone.region> _:us-west-1 .

        _:us-west-1b <dgraph.type> "zone" .
        _:us-west-1b <zone.name> "us-west-1b" .
        _:us-west-1b <zone.region> _:us-west-1 .

        _:us-west-1c <dgraph.type> "zone" .
        _:us-west-1c <zone.name> "us-west-1c" .
        _:us-west-1c <zone.region> _:us-west-1 .
    }
}