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

[Jay Flaherty]

On Monday 05 November 2001 12:09 pm, Christopher Miller wrote:
>> 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 the reply Chris,

That is my problem. I don't know how to set up etc/profiles.order to check 
for a valid CD key. Do I put it in a perl block like this:
[perl]
my $cd_key = $Values->{cd_key};
my $unlock = $Tag->unlock_me($cd_key);
if ($unlock eq "") {
return  "mv_cdkey_valid=required CD key fails tests.";
}
[/perl]
I'm just not sure how this file works. Do I need to set 
$VEND::Session->errors{cd_key} (or something)?
in pages/ord/checkout.html I have:
<tr bgcolor="#AAAAAA">
    <td align=right colspan=6>
    <font __FFACE__ size="1">[error name=mv_cdkey_valid std_label="CD KEY"   	
    required=1]</font>
    </td>
</tr>
<tr bgcolor="#AAAAAA">
    <td ALIGN=LEFT colspan=6>
    CD KEY: <input type="text" name="cd_key" value=[value cd_key]>
    </td>
</tr>
In catalog.cfg I have my working UserTag unlock_me

Anymore help would be greatly appreciated. Thanks...jay

####################
Jay Flaherty
Mediapulse, Inc.
fty@mediapulse.com