Checkout Session: Ability to disable amount field for Pay-As-You-Want product when creating checkout via API

[rishi-raj-jain]

Description
A customer requested the ability to disable/hide the amount input field for "Pay-As-You-Want" products when a checkout session is created via the API. This would let them display a checkout session with the price fixed through the API while not allowing the user to input any amount.

Current Behavior
Currently, when amount is passed in https://docs.polar.sh/api-reference/checkouts/create-session for a pay-what-you-want product, while the checkout is created with the right amount - people still have the ability to edit the price from the checkout.

Expected Behavior
A way to disable the editable checkout price field in the pay-what-you-want product.

Suggested Solutions

• Add an option to API which allows to disable this default behavior
• Detect that if the amount field in the API is being applied (i.e. the product is not a fixed/free), the amount should be fixed by default and not editable by user