Update cart metafields
This guide shows you how to use a cart handler to update cart metafields.
Requirements
Anchor link to section titled "Requirements"- You've completed the quickstart guide.
- You've set up a cart handler.
Step 1: Read cart metafields
Anchor link to section titled "Step 1: Read cart metafields"Update the cart query fragment to return cart metafields. For more information, refer to the default CartApiQuery fragment.
The following example adds themetafield field:
Step 2: Create a metafield form
Anchor link to section titled "Step 2: Create a metafield form"Use Remix's useFetcher hook to create a form that submits information that you want to store in a metafield. The hook submits a form request to the /cart route's action when users submit with this metafield form. You can use this component anywhere in the app.
When you use fetcher.submit, make sure there's a data key with the name CartForm.INPUT_NAME. The key value must be a JSON stringified object with action and inputs defined.
Step 3: Handle the update metafield form request
Anchor link to section titled "Step 3: Handle the update metafield form request"Handle the update metafield form request in an action. Use the cart, created from createCartHandler, to handle cart mutation requests to the Storefront API.
- Learn how to update buyer identity.