Persisted Query with argument

Users GraphQL
1

Can anyone offer any help on the necessary syntax of persisted queries with arguments?

I have things working fine for a “queryType” query, now I’d like to progress to a “getType” query, which will need an argument, so I thought I could just extend the approach by adding variable section.

I’m having trouble though …

Using Insomnia I tried:

{
	"query": "{{ _.query }}",
	"variables":{"userId":"nigel"},
	"extensions": {
		"persistedQuery": {
			"sha256Hash": "{% hash 'sha256', 'hex', _.query %}"
		}
	}
}

with _.query defined as

{
  "query": "query MyQuery($userId: String!) {getUser(userId: $userId) {userId userCredentials {userEmail}}}"
}

gets me

{
  "data": null,
  "errors": [
    {
      "message": "Operations not allowed -- [getUser]"
    }
  ]
}

Rujuning on Dgraph Cloud … so v20.11 (for a few more days anyway)