Discount on choice of payment method

Discount on choice of payment method

In my webshop a customer can choose to pay online via Ideal. By choosing this option, they will get a discount of 10%.

In the configuration of the Mollie addon I have set Price = -10%
In the configuration of Joomshopping I have set prices in admin and front end at netto.

Thus I would like to see e.g.

Netto total = 1000,00 EURO
Discount Ideal 10% = -100,00 EURO (=0,10 x Netto total)
TAX (21%) = 189,00 EURO (= 0,21 x 900)
---------------------------------------------------------------------------------------- +
Bruto total = 1.089,00 EURO


But in my webshop the calculation is as follows:

Netto total = 1000,00 EURO
Discount Ideal 10% = -121,00 EURO (= 0,10 x (Netto total + TAX))
TAX (21%) = 184,59 EURO
---------------------------------------------------------------------------------------- +
Bruto total = 1.063,59 EURO

Thus the problem is, that the 10% Ideal discount is calculated from the Bruto total and then subtracted from the Netto total.
What am I doing wrong?

Aw: Discount on choice of payment method

Okay, the solution i found is as follows:

In configuration i have set: display prices in admin area as bruto; display prices in front end as netto.

Aw: Discount on choice of payment method

or chenge code (Joomshopping 5.x)
components\com_jshopping\Model\CartModel.php

function getSummForCalculePlusPayment(){
$jshopConfig = \JSFactory::getConfig();
$sum = $this->getPriceBruttoProducts();
if ($this->display_item_shipping){
$sum += $this->getShippingBruttoPrice();
$sum += $this->getPackageBruttoPrice();
}
if ($jshopConfig->use_summ_for_calcule_payment_with_discount) {
$sum -= $this->getDiscountShow();
}
return $sum;
}

change to


function getSummForCalculePlusPayment(){
$jshopConfig = \JSFactory::getConfig();
$sum = $this->getPriceProducts();
if ($this->display_item_shipping){
$sum += $this->getShippingBruttoPrice();
$sum += $this->getPackageBruttoPrice();
}
if ($jshopConfig->use_summ_for_calcule_payment_with_discount) {
$sum -= $this->getDiscountShow();
}
return $sum;
}