Problems with discount formula

[Mike Lerley <mike@bfent.com>]

******    message to minivend-users from Mike Lerley <mike@bfent.com>     ******

Will somebody please tell me why the following code, modeled after the
docs, does not work correctly:

[calc]
        [item-list]
                $totalq{"[item-field category]"} += [item-quantity];
        [/item-list]
        return '';
[/calc]
[discount ALL_ITEMS]
        return $s if "[item-field category]" == "Cold Bay Seafood";
        return 17*$q*5 if $totalq{"Hanson Bros."} >= 10;
        return (27-$q)*5*$q;
[/discount]

Code is in basket.html.  There are only two products in the database
with the "Cold bay seafood" category.  They should not be discounted.
All other products, with a category of "Hanson Bros.",. start at
$26/pound in 5 pound increments and drop one dollar per pound for each 5
pounds purchased, with a minimum price of $17/pound.  If I leave in the
first return line, no items are discounted.  If I take it out, all
products are discounted including the Cold Bay ones (duh).  Basically it
is returning $s whether the category is cold bay seafood or not.  I have
verified that the category names are correct; the formula works
correctly if I take out the first return line.

While I'm on the subject, what exactly does the [item-discount] field
represent?  It always ends up at something like $-230.00 for me and I
have no idea what it means.  It doesn't seem to relate to anything..
something like $110 less than the previous selling price.. strange.

Thanks...
-mike

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