[mv] MV 3.14 - Discount Pricing Scheme

["Russ Mann" <tech@khouse.org>]

******    message to minivend-users from "Russ Mann" <tech@khouse.org>     ******

Hello List,

I am trying to implement a very interesting pricing discount scheme.
On my store I sell several different categories of products.  In one of
these categories only, i need to implement a pricing structure like this:

Qty.    Price Ea.
1-2  =  11.96
3-9  =  10.00
10+  =  9.50

I've tried several things, but the DISCOUNT tag seems to have a lot of
limitations not allowing it to work with variables generated in the [calc]
tags or by [scratch] variables.

using the following code, i am able to get a total quantity of the products
in the category that i am discounting (they all have a covertype of 'Audio
Tapes' in the database.)


[item-list]
<!-- [calc]
if ('[item-field covertype]' eq 'Audio Tapes') { $totalbps +=
[item-quantity]; }
[/calc] -->
[/item-list]

The problem comes when i try to implement this in the discount section:

[discount ENTIRE_ORDER]
if (($totalbps >= 3) && ($totalbps <=9)) { $numoff = 1.96; }
elsif ($totalbps >= 10) { $numoff = 2.46; }
else { $numoff = 0; }
$dollarsdiscount = $totalbps * $numoff;
return($s - $dollarsdiscount);
[/discount]

This doesn't work, and presumably because it cannot access $totalbps from
within the discount tag.
How can i access this [calc] variable within the discount tag?
How can i display the discount that is applied to the ENTIRE_ORDER?

Thank you,

Russ Mann

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