Customer fill zip code at cart

[Uysim]

I am working on an app. I want customer to input zip code in cart which is already done by add it to cart attributes. 

When customer click on checkout button. On page checkout I want the shipping address to come from the cart attributes. How can I do that?

[hassain]

Hey @Uysim ,

Use the Storefront API to create the customer first and set-up their address to have the Zip Code plus all of the additional information. (https://shopify.dev/docs/storefront-api/reference/mutation/customercreate?api[version]=2020-04)

Then use the Storefront API to create the checkout/cart (https://shopify.dev/docs/storefront-api/reference/mutation/checkoutcreate?api[version]=2020-04), and the following mutation to associate the customer with that checkout/cart: https://shopify.dev/docs/storefront-api/reference/mutation/checkoutcustomerassociatev2?api[version]=...

Now once the user is taken to the 'webUrl' of the checkout object (e.g. the Shopify checkout page), they will already have their email address and Zip code filled in. 

[hassain]

Alternatively, you could more simply just use the Storefront API to create the checkout (https://shopify.dev/docs/storefront-api/reference/mutation/checkoutcreate?api[version]=2020-04) and then use this mutation to update the Shipping Address of that checkout with the correct Zip code: https://shopify.dev/docs/storefront-api/reference/mutation/checkoutshippingaddressupdatev2?api[versi...

This way you can skip all the steps and processes for customer creation