Allows to create a text field for entering a coupon code and a button for processing the code and redirecting the browser to a specific page.
Usually this AJAX handler used on the Cart page together with shop:cart action.
You can use this handler for creating the AJAX driven Checkout button on the Cart page. Example:
Specifies an URL to redirect the browser to, optional.
Note that if your copy of LemonStand is installed in a subdirectory, you need to use the root_url() function
in the redirect field value.