Just found what I think is a solution to this problem. I wanted to allow customers to edit the quantity box in their shopping cart, disregarding the fact that I only allow them to add one at a time from the product info page and product listing pages.
The solution was found by commenting out some lines in templates/YOUR_TEMPLATE/templates/tpl_shopping_cart_default.php
At around line 67 you will find the following:
Code:
<?php
if ($product['flagShowFixedQuantity']) {
echo $product['showFixedQuantityAmount'] . '<br /><span class="alert bold">' . $product['flagStockCheck'] . '</span><br /><br />' . $product['showMinUnits'];
} else {
echo $product['quantityField'] . '<br /><span class="alert bold">' . $product['flagStockCheck'] . '</span><br /><br />' . $product['showMinUnits'];
}
?>
Delete or comment out the if statement and what would be processed if the statement was true. We want to leave the code after the else statement. This will ensure that the quantity field will always be update-able in the shopping cart page. I just commented the said lines out so that reversal is easy:
Code:
<?php
// if ($product['flagShowFixedQuantity']) {
// echo $product['showFixedQuantityAmount'] . '<br /><span class="alert bold">' . $product['flagStockCheck'] . '</span><br /><br />' . $product['showMinUnits'];
// } else {
echo $product['quantityField'] . '<br /><span class="alert bold">' . $product['flagStockCheck'] . '</span><br /><br />' . $product['showMinUnits'];
// }
?>