Admin GraphQL API discountAutomaticAppCreate returns invalid value

[violettran]

I got this error `Variable $automaticAppDiscount of type DiscountAutomaticAppInput! was provided invalid value` when run the Admin GraphQL API discountAutomaticAppCreate. How to fix that?

API version was 2024-04.

My input was

{
  "automaticAppDiscount": {
    "title": "some random name",
    "functionId": "<my function ID>",
    "combinesWith": {
       "orderDiscounts": false,
       "productDiscounts": true,
       "shippingDiscounts": false
    },
    "startsAt": "2024-06-02T17:09:21Z",
    "endsAt": null,
    "metafields": null
  }
}

I used postman to make an API call successfully. Then I called another request using Golang code, just replace the title because it must be unique. The error occurred.

My code look something like below:

package shopify

import (
    "context"
    "fmt"

    "go-shopify-graphql-model/graph/model"
)

type DiscountService interface {
    AutomaticAppCreate(ctx context.Context, discount model.DiscountAutomaticAppInput) (output *model.DiscountAutomaticApp, err error)
}

type DiscountServiceOp struct {
    client *Client
}

var _ DiscountService = &DiscountServiceOp{}

type mutationDiscountAutomaticAppCreate struct {
    DiscountAutomaticCreateAppPayload model.DiscountAutomaticAppCreatePayload `json:"discountAutomaticAppCreate"`
}

var discountAutomaticAppCreate = `
mutation discountAutomaticAppCreate($automaticAppDiscount: DiscountAutomaticAppInput!) {
  discountAutomaticAppCreate(automaticAppDiscount: $automaticAppDiscount) {
    userErrors {
      field
      message
    }
    automaticAppDiscount {
      discountId
      title
      startsAt
      endsAt
      status
      appDiscountType {
        appKey
        functionId
      }
      combinesWith {
        orderDiscounts
        productDiscounts
        shippingDiscounts
      }
    }
  }
}
`

func (s *DiscountServiceOp) AutomaticAppCreate(ctx context.Context, input model.DiscountAutomaticAppInput) (output *model.DiscountAutomaticApp, err error) {
    out := mutationDiscountAutomaticAppCreate{}
    vars := map[string]interface{}{
       "title":        input.Title,
       "functionId":   input.FunctionID,
       "startsAt":     input.StartsAt,
       "endsAt":       input.EndsAt,
       "combinesWith": input.CombinesWith,
       "metafields":   input.Metafields,
    }

    if err := s.client.gql.MutateString(ctx, discountAutomaticAppCreate, vars, &out); err != nil {
       return nil, fmt.Errorf("gql.MutateString: %w", err)
    }

    if len(out.DiscountAutomaticCreateAppPayload.UserErrors) > 0 {
       return nil, fmt.Errorf("%+v", out.DiscountAutomaticCreateAppPayload.UserErrors)
    }

    return out.DiscountAutomaticCreateAppPayload.AutomaticAppDiscount, nil
}

[violettran · Accepted solution]

I found an error in `vars`. It should be

vars := map[string]interface{}{
   "automaticAppDiscount": map[string]interface{} {  
       "title":        input.Title,
       "functionId":   input.FunctionID,
       "startsAt":     input.StartsAt,
       "endsAt":       input.EndsAt,
       "combinesWith": input.CombinesWith,
       "metafields":   input.Metafields,
    }
}