How to make an order processing fee for each item?

Question

opencart

Dobrvogo time of day. Included an order processing fee in the amount of 10 hryvnia. Everything works well, but you need to make sure that this amount is multiplied by the number of goods. That is, if I ordered 2 pieces, then not 10, but 20, if 3 pieces, then 30 and so on. Thanks in advance. Maybe there is some other module with which you can implement this?

Answer 1

File catalog/model/extension/total/handling.php
find line

$total['total'] += $this->config->get('total_handling_fee');

and make it like this

$total['total'] += $this->cart->countProducts() * $this->config->get('total_handling_fee');