Goal: Build a Shopify app feature that restricts gift card redemption based on cart value (e.g., a $100 card usable only when the order exceeds $1,000).
Suggested approach: Use Shopify’s Cart API (AJAX cart endpoint) to:
Fetch cart contents, item prices, and total.
Run server-side validation to check thresholds.
Update cart state and surface user-facing messages when conditions are met/not met.
Implementation detail: Validation logic resides in the app backend, leveraging data from the Cart API; cart messaging and updates can be handled via the same API on the storefront.
Open question: Whether the cart-value check and conditional application can be performed directly on the checkout page at the moment of gift card redemption. The thread seeks confirmation on checkout-page enforcement but does not provide an answer yet.
Status: Partial guidance provided (cart-level validation via Cart API). Checkout-level implementation remains unresolved; no final decision or action items confirmed.
Hi! We are developing a public app that allows Shopify merchants to create & manage Gift Cards. We are currently looking to add a new feature that lets merchants configure conditional gift card application based on cart value.
For example, allow merchants to set up gift cards that can only be redeemed if the cart total reaches a certain amount, like a $100 gift card being applicable only for orders exceeding $1,000.
We would greatly appreciate any guidance on how to best implement this feature within our app.
This is a great idea for expanding on the native gift card functionality, and you’d likely be using the Cart API to get the details of the items in the cart, including their prices and a carts total value. Then you could perform your own validation logic that would be part of your app’s backend but uses the data obtained from the Cart API. You can also use the Cart API to update the cart’s state and display relevant messages.
Thank you for the insights on using the Cart API. To clarify the specific implementation we are aiming for, would it be possible to perform the cart value check and conditionally apply the gift card directly on the checkout page, as the user attempts to redeem it?