Integrate Rye into existing checkout system

There are two scenarios to focus on based on what you want the user to be able to do.

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Checkout only one item at once

• Start identifying which products come from Rye and which products already exist in your current database
• For products that come from Rye, adjust your checkout flow to ask for additional information that is required by Rye to perform a successful checkout.

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Checkout multiple items at once

There are three cases to deal regarding items in cart:

• Only Rye products in a cart:
  • Adjust your checkout flow to ask for additional information that is required by Rye to perform a successful checkout.
• Only your products in a cart:
  • Continue with your existing flow.
• Mix of Rye and your products in a cart:
  • Collect all information that is required by Rye.
  • When customer shipping address is added, give user the ability to select a shipping method for Rye items.
  • During the payment step, complete the payment for Rye items via Rye Pay or submitCart and use the same payment token / Spreedly token to complete the payment for items from your database.