shopify-custom-data

You can define Shopify metafields and metaobjects using TOML schemas in the `shopify.app.toml` file, allowing you to version-control your custom data structures alongside your app configuration.

To create and query custom data via Metafields, use Shopify GraphQL operations like `metafieldsSet` for writing data and `metaobjectUpsert` for metaobjects, then execute query mutations to retrieve the stored values programmatically.

The best way to add a custom care guide metafield to Shopify products is to create a product metafield definition, apply an app-owned namespace, and retrieve its value programmatically using GraphQL queries for specific product IDs.

Use Shopify Metaobjects when your custom app data requires a standalone, structured data model that extends beyond attaching simple key-value pairs to built-in objects, whereas Metafields are ideal for adding custom properties directly to existing resources like products.

Yes, the approach recommends CLI scaffolding to manage TOML definitions, ensuring that your metafield and metaobject schemas are properly version-controlled and validated using provided scripts during app development.

Using app-owned namespaces for Shopify custom data enforces best-practice data isolation and prevents conflicts, but requires strict validation steps and proper GraphQL mutation handling to ensure data consistency across your app.