Using GraphQL productVariantAppendMedia to associate product image to a variant

[Waqas87]

Hello! 

I am using GraphQL productVariantAppendMedia path to associate product image to one of its variants. Below is the mutation:

mutation {
  productVariantAppendMedia(productId: "gid://shopify/Product/7723406459105", variantMedia: {mediaIds: ["gid://shopify/ProductImage/36771612623073"], variantId: "gid://shopify/ProductVariant/42940636594401"}) {
    product {
      id
    }
    productVariants {
      id
    }
    userErrors {
      field
      message
    }
  }
}

When I execute the above mutation on GraphiQL then I receive below (vague) response:

{
  "data": {
    "productVariantAppendMedia": null
  },
  "errors": [
    {
      "message": "invalid id",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "productVariantAppendMedia"
      ]
    }
  ],
  "extensions": {
    "cost": {
      "requestedQueryCost": 10,
      "actualQueryCost": 1,
      "throttleStatus": {
        "maximumAvailable": 1000,
        "currentlyAvailable": 999,
        "restoreRate": 50
      }
    }
  }

Which id of which field is invalid? I don't get it.

Can I even use this path for this purpose?

I will really appreciate quick responses.

[Waqas87 · Accepted solution]

I have actually resolved the issue on my own. I was actually providing the wrong id as MediaId. What I actually did - get the Media Object of the product and from that object extract the MediaId and then pass it into the mutation- It worked perfectly fine.

[bryanatrevive]

It wasn't clear to me how to get the correct MediaId's. This worked:

{
  product(id: "gid://shopify/Product/123"){
    media (first: 250){
      edges{
        node{
          alt
          __typename
          ... on MediaImage{
            id # <- this one
            image{
              altText
              url
              __typename
            }
          }
        }
      }
    }
  }
}