Decoding fulfillmentOrders response not working (no errors)

[krispetkov]

When trying to execute the following query:

query ($id: ID!) {
    order(id: $id) {
        fulfillmentOrders(first: 1, reverse: true) {
            nodes {
                id
            }
        }
    }
}

The returned response is not being decoded correctly to the struct correctly.

Response:

{
    "data": {
        "order": {
            "fulfillmentOrders": {
                "nodes": [
                    {
                        "id": "gid://shopify/FulfillmentOrder/1234567890123"
                    }
                ]
            }
        }
    },
    "extensions": {
        "cost": {
            "requestedQueryCost": 4,
            "actualQueryCost": 4,
            "throttleStatus": {
                "maximumAvailable": 2000,
                "currentlyAvailable": 1996,
                "restoreRate": 100
            }
        }
    }
}

Struct:

type getOrderFulfilmentIDResp struct {
        Data struct {
            Order struct {
                FulfillmentOrders struct {
                    Nodes []struct {
                        ID string `json:"id"`
                    } `json:"nodes"`
                } `json:"fulfillmentOrders"`
            } `json:"order"`
        } `json:"data"`
    }

The Nodes array is always empty and no errors are available. I checked that the returned response/json has values, seems that decoding is not working for some reason...

err := sc.client.GraphQL.Query(ctx, getOrderFulfilmentIdQuery, &variables1, &resp1)
    if err != nil {
        sc.logger.Error(err, "getting fulfilment order id for a shopify order")
        return err
    }

Tried it with v3 and v4 and getting the same result.

[krispetkov]

Ok, I think I found the reason. It seems you don't have to have the entire response as a structure. It seems some kind of wrapping happens along the way and the Data and Extensions levels are obsolete, they are being added by the logic automagically. So to make it work instead of this struct:

type getOrderFulfilmentIDResp struct {
        Data struct {
            Order struct {
                FulfillmentOrders struct {
                    Nodes []struct {
                        ID string `json:"id"`
                    } `json:"nodes"`
                } `json:"fulfillmentOrders"`
            } `json:"order"`
        } `json:"data"`
    }

you need to use this one:

type getOrderFulfilmentIDResp struct {
        Order struct {
            FulfillmentOrders struct {
                Nodes []struct {
                    ID string `json:"id"`
                } `json:"nodes"`
            } `json:"fulfillmentOrders"`
        } `json:"order"`
    }