Shopify GraphQL: Unable to modify product category - Invalid input error

Other Questions Shopify
1

I’m having trouble updating a product’s category in Shopify using GraphQL. The API keeps giving me an error saying the field isn’t defined on ProductInput. Here’s what I’m trying to do:

mutation UpdateProduct($input: ProductInput!) {
  modifyProduct(input: $input) {
    item {
      identifier
      name
      group {
        identifier
      }
    }
    errors {
      field
      details
    }
  }
}

And my variables look like this:

{
  "input": {
    "identifier": "gid://myshop/Item/1234567890",
    "group": "gid://myshop/ItemGroup/abcdef-123"
  }
}

But I keep getting an error about the ‘group’ field not being defined. I’ve checked the docs and it seems like this should work. Am I missing something? Should I structure my input differently? Maybe use ‘group { identifier }’ instead of just ‘group’? Or change my variables to something like ‘“group”: { “identifier”: “…” }’? Any help would be great!

2

I’ve encountered similar issues with Shopify’s GraphQL API. The problem stems from how Shopify handles product categories. Instead of using ‘group’, you need to work with ‘collections’.

Try modifying your mutation to use ‘collectionsToJoin’ and ‘collectionsToLeave’. Here’s a rough example:

mutation updateProductCollections($input: ProductInput!) {
  productUpdate(input: $input) {
    product {
      id
      title
      collections {
        edges {
          node {
            id
            title
          }
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}

For variables, use something like:

{
  "input": {
    "id": "gid://shopify/Product/1234567890",
    "collectionsToJoin": ["gid://shopify/Collection/abcdef-123"]
  }
}

This approach should resolve your issue. Remember to replace the IDs with your actual product and collection IDs.

3

I’ve wrestled with this exact issue in my Shopify projects. The key here is understanding that Shopify doesn’t use ‘group’ for categorization, but rather ‘collections’. It’s a common stumbling block.

Here’s what worked for me:

First, fetch the collection ID for your target category. Then, use the productUpdate mutation to associate the product with that collection.

Your mutation should look something like this:

mutation updateProductCollection($input: ProductInput!) {
  productUpdate(input: $input) {
    product {
      id
      title
      collections(first: 5) {
        edges {
          node {
            id
            title
          }
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}

For the variables, structure them like this:

{
  "input": {
    "id": "gid://shopify/Product/1234567890",
    "collectionsToJoin": ["gid://shopify/Collection/abcdef-123"]
  }
}

This approach should resolve your ‘Invalid input’ error. Remember to replace the IDs with your actual product and collection IDs. Hope this helps!

4

I’ve encountered this issue before when working with Shopify’s GraphQL API. The problem lies in how Shopify handles product categorization. Instead of using ‘group’, you need to work with ‘collections’.

To resolve this, you should modify your mutation to use the productUpdate field and specify the collections you want to associate with the product. Here’s an example of how your mutation could look:

mutation updateProductCollections($input: ProductInput!) {
  productUpdate(input: $input) {
    product {
      id
      title
      collections(first: 5) {
        edges {
          node {
            id
            title
          }
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}

For your variables, use something like this:

{
  "input": {
    "id": "gid://shopify/Product/1234567890",
    "collectionsToJoin": ["gid://shopify/Collection/abcdef-123"]
  }
}

This approach should resolve your ‘Invalid input’ error. Make sure to replace the IDs with your actual product and collection IDs.

5

Hey there! I’ve run into this issue before when working with Shopify’s API. The challenge arises because the API doesn’t support direct modification of a product’s category via ProductInput. You need to use the collections field to update the category.

I resolved it by first retrieving the collection ID for the desired category and then using the productUpdate mutation. This mutation call updates the product and its associated collections. Adjust your mutation and variables to match the structure expected by Shopify. This approach cleared the ‘Invalid input’ error for me, and I hope it does the same for you.

6

ive had this problem too! shopify can be a pain sometimes. u need to use ‘collections’ instead of ‘group’. try something like this:

mutation {
  productUpdate(input: {
    id: "gid://shopify/Product/1234567890",
    collectionsToJoin: ["gid://shopify/Collection/abcdef-123"]
  }) {
    product {
      id
      title
    }
    userErrors {
      message
    }
  }
}

hope that helps!