Price calculation difference between product and total and invoice

[deech123]

Hi I do not know if this is a know bug or what, but today a client of me told me the total to pay price is different from what the confirmation email and screen showed.

So I did some testing and yes there is a problem.

look here : (screeshot1)
client order something for 3.11€ and order 34 pieces, so total = 105.71€

but when I look at the details of his order I get a total of = 105.59€ (screenshot2)
the correct price is 105.71€, so I lose some money every time an order is done.
because the client only get the invoice after I received the payment.

Who can give me an explanation or solution?

[gdinari]

This is a very common and serious problem with prestashop. The issue(s) with the different calculation files and how the numbers are computed. Some files to look at are:

- PaymentModule.php (classes folder) - this is for the order confirmaiton email

- Cart.php (classes folder) - this is for the shopping cart and email confirmation


This is like a tangled web where everything is connected to one another. If you not careful you might get one part to work and mess up another part without knowing. Some other things to keep in mind are discounts and how theyre computed.

Take a look at those files and see what you can find. But honestly this is something the presta team really have to get on, like ASAP!