How to add product discount as percentage of profit, not total price?

[anis_r]

Hello, I currently need to deduct x% of the profit of all products when cart quantity is greater than 2.

I tried using Product Catalog rules for that, but I could only set the discount as either a fixed amount or a percentage of the product's *total amount* (I could figure out the cart quantity part though).

How can I set a discount based on profit instead (i.e. retail price minus cost)? Something like:

New price = Old price - 10% of profit

How can I achieve this? I am a developer so I don't mind some coding (not a Prestashop expert though !).

 

P.S.: If this can actually be done using product catalog rules, I would definitely prefer to have one general rule for all products - not one rule for each product, as I have lots of products in my shop (otherwise I would have just hard-coded a fixed discount amount for each product). Thanks in advance!

Edited November 11, 2019 by anis_r (see edit history)

[NoslenZuir]

Hi there.

I have a similar problem,

When I create a cart rule I need to apply discount directly to products not total so the voucher print that way.

How can achieve that?