[ic] How do I handle a "checksum" like field?

Sun Nov 4 16:05:40 2001

On Sun, Nov 04, 2001 at 01:18:37PM -0500, Jay Flaherty wrote:
> Hello everyone;
> I have added a field to the checkout page (CD key) that requires a checksum
> run against it to check for a valid CD key and if it passes the checksum,
> return an unlock code. I have successfully created a UserTag that does this
> and returns the unlock code back to the user via the receipt.html page as
> well as via email and finally adds it to the database once the credit card
> is validated and charged. My problem is how to handle a CD key entered in
> the CD key field that does not pass the checksum. I would like it to work
> the same way an invalid credit card does not pass the CC checksum, i.e.
> reload the checkout page with the error message "Invalid CD Key. Please try
> again" prominently displayed in red above the CD key field. I have poured
> over all the IC files and can't figure out how the checksum on the CC works.
> Actually, I can't figure out exactly how the whole checkout process works
> though I have sucessfully implemented it via PGP email and Authorizenet :-)
>  I would appreciate anyone who can point me in the right direction or give
> me some example code.

Do it in the profile for the checkout page.  Return a different successpage
depending on success or failure (or it sounds like you would prefer to loop 
back to checkout).  Look up profiles, successpage, failpage in docs.

> 
> Thanks for your time...jay
> Jay Flaherty
> Mediapulse, Inc.
> fty@mediapulse.com
> 
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