Understanding Union Fields in Shopify GraphQL API
Union fields are unique in the Shopify GraphQL API as they allow a single variable to have more than one possible type. This versatility makes them valuable for building advanced workflows in Shopify Flow.
Examples of Union Fields
- PurchasingEntity: This field on an order can represent either a PurchasingCompany or a Customer, providing flexibility in processing order data.
- DiscountApplications: All types within DiscountApplications share a 'value' object, enabling consistent data handling and discount evaluations.
Leveraging Dynamic Data in Shopify Flow
With these dynamic field types accessible in Shopify Flow, you can craft workflows that utilize this data effectively.
Use Cases for PurchasingEntity
- Identify whether the order was placed by a Customer or a PurchasingCompany.
- Enable workflows tailored to specific buyer types for improved automation.
Use Cases for DiscountApplications
- Determine if a Scripts discount was applied to an order, enabling streamlined order validation processes.
- Evaluate the 'value' object across different discount applications for precise discount tracking.
Best Practices for Dynamic Fields
Dynamic fields, such as PurchasingEntity and DiscountApplications, may not always contain the type you expect. To handle this, use the “typename” field on the corresponding object in Shopify Flow.
Steps to Handle Typename
- Select the typename field within your condition setup in Shopify Flow.
- Specify the type you want to check, ensuring accurate field handling across workflows.
By understanding and implementing these techniques, Shopify merchants can unlock the full potential of dynamic data in their automation processes.