Purchase and Download of Digital Items
I have a customer who sells digital documents (documents in PDF-format).
The catalogue, cart and checkout have been setup and are working correctly.
The idea is that the user logs in; consequently the catalogue allows him/her to
1. download those documents that have already purchased
2. allows the purchase of further documents
In the Catalogue how do I:
1. flag to show a download link (button) in lieu of the order link (button) if the document has already been purchased
2. disable the purchase link (button) for items that are in the cart; the document can be ordered just the once.
Any help will be greatly appreciated
PS To keep the problem simple, I have not included the facts that the documents are government regulated and need to have a unique customer ID printed on them and that a Spry Data Region is being used for the Catalogue, Cart and Checkout. These have been implemented and are working correctly