Cart Graphql API - Carrier Service shipping

[sebastiandev]

Hi,

I'm trying to utilize the Cart GraphQL API to create a cart with selected products and display all available shipping methods. I've made the appropriate query, everything is generating, however, there's a discrepancy between the methods in the API and the methods in the Checkout.

The Cart API doesn't return shipments from the Carrier Service API. How can this be worked around?

Query:

mutation cartCreate($input: CartInput) {
  cartCreate(input: $input) {
    cart {
      id
      createdAt
      checkoutUrl
      deliveryGroups(first: 100) {
        nodes {
          deliveryOptions {
            code
            deliveryMethodType
            title
            description
            estimatedCost {
              amount
              currencyCode
            }
          }
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}

Response:

{
  "data": {
    "cart": {
      "id": "gid://shopify/Cart/c1-455ed6f80eea2bf872c08d7cb5419128",
      "createdAt": "2024-03-31T19:39:11Z",
      "deliveryGroups": {
        "nodes": [
          {
            "deliveryOptions": [
              {
                "code": "Test",
                "deliveryMethodType": "SHIPPING",
                "title": "Test",
                "description": "",
                "estimatedCost": {
                  "amount": "1.0",
                  "currencyCode": "PLN"
                }
              }
            ]
          }
        ]
      }
    }
  }
}

Screen from Checkout:

[vadimpk]

This was implemented in CartAPI in 2024-07 version. You can read about it more here: https://shopify.dev/docs/storefronts/headless/building-with-the-storefront-api/defer#fetching-carrie...