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Preventing decimals in quantity field

Thread began 3/26/2019 1:27 pm by TroyD | Last modified 3/27/2019 4:28 pm by TroyD | 50 views | 2 replies


Preventing decimals in quantity field

I have a shopping cart that sells items in bags of 50. If you need more than 50, you simply buy another bag.
My calculations work by multiplying the (bag qty) x (qty in bag) x (individual price). All works fine, but a customer figured out a way to buy 60 by entering 1.2 in the quantity.

There is javascript that prevents this but if you disable javascript for a moment, you can enter and post quantities of 1.2, 1.5, or whatever you want. Long story short, I needed to restrict the quantity to whole numbers, 1, 2, 3, etc with and without javascript.

I found one solution in a previous thread where Ray recommended changing floatval to intval for the $itemQuantity in the eCart object. This worked great but if I open and edit the eCart object interface at a later date, it resets the intval back to floatval. If I forget to go back and manually change it again, then we have the same issue.

Then I thought, why not try using floor() for my qty post value in the Add To Cart behavior. This works fine when adding a product to the cart. Is there any reason I can’t just use this method?

This is what I changed in the ATC behavior.

Changed this…

$ATC_itemQuantity = "".$_POST["eCart1_1_Quantity_Add"]  ."";// column binding

To this…

$ATC_itemQuantity = "".floor($_POST["eCart1_1_Quantity_Add"])  ."";// column binding

Is this acceptable? I didn’t want to add this to the live site until I was certain it wouldn’t cause some other side affect.


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