make_graphiql_handler doesn't support named queries

[jmurrayufo]

Recently switched over to running Starlette to get working subscriptions, but I've run into a very strange bug.

Versions:

• starlette==0.14.2
• starlette-graphene3==0.5.1
• graphene==3.0b8
• graphql-core==3.1.6
• graphql-relay==3.1.0

Running our app as follows

app = Starlette()
schema = graphene.Schema(
    query=Query,
    mutation=Mutation,
    subscription=Subscription,
    auto_camelcase=False,
)

app.mount("/", GraphQLApp(schema, on_get=make_graphiql_handler()))

if __name__ == "__main__":

    uvicorn.run(app, host="0.0.0.0", port=8000)

Expected behavior:

Running the following in GraphiQL works:

{
  star {
    id
  }
}

This works as well:

query {
  star {
    id
  }
}

This fails:

query name1 {
  star {
    id
  }
}


query name2 {
  star {
    id
  }
}

With the following error:

Syntax Error GraphQL (1:1) Unexpected <EOF>

1: 
   ^

I can also see similar errors given this input:

query {
  star {
    id
  }
}


query name2 {
  star {
    id
  }
}

Which results in

{
  "data": null,
  "errors": [
    {
      "message": "This anonymous operation must be the only defined operation.",
      "locations": [
        {
          "line": 1,
          "column": 1
        }
      ],
      "path": null
    }
  ]
}

I do note a few odd behaviors here.

• Refreshing the page should preserve the queries, it doesn't and gives me a fresh welcome screen or an incorrectly edited version of the query.
• Naming queries at all seems unsupported, but other instances of GraphiQL seem to support this without issue.
• The GraphiQL playground handler supports named queries without issue.
• No change to code base, this is all working correctly with starlette's provided GUI client. But release notes indicate that this support is deprecated.