documention on Union

Hi guys,

Quite new graphene to, I read on the graphql.org website, http://graphql.org/learn/schema/#union-types. There is this way to define a union type:

union SearchResult = Human | Droid | Starship

It seems that there is code about Union in the source, but not the documentation, just want to know Is this already supported in graphene and just lacking of doc?

Thanks!

[waxisien]

@whalesalad Does your query contain an inline Fragment http://graphql.org/learn/queries/#inline-fragments ? Since the union returns different types you need a query like this :

{
  search {
    __typename
    ... on CashContract{
      id
      contract_status
    }
    ... on FuturesContract{
      expiration_date
    }
  }
}

[lisongx]

@syrusakbary Hi Syrus, actaully I opened this issue because of this is any docs about using Union on our http://graphene-python.org/ website, maybe we could still let this open?