fix

alkatorapi/views.py

@@ -394,8 +394,10 @@ def cart_buy(request):
     invoice = Invoice(
         user=user,
         address=user.profile.address,
-        invoice_id=Invoice.next_invoice_id()
+        invoice_id=Invoice.next_invoice_id(),
+        total_price=0,
     )
+    total_price = 0
     invoice.save()
 
     for cp in cart_products:
@@ -407,12 +409,13 @@ def cart_buy(request):
         )
         cp.product.quantity -= cp.quantity
         cp.product.save()
+        total_price += cp.quantity * cp.product.price
         ip.save()
 
     payment_data = {
         'merchant': COMGATE_MERCHANT,
         'test': 'true' if COMGATE_TEST else 'false',
-        'price': invoice.calculate_total_price() * 100,
+        'price': total_price * 100,
         'curr': 'CZK',
         'method': 'ALL',
         'label': 'Merch Alkátor Race',
@@ -432,6 +435,7 @@ def cart_buy(request):
         invoice.delete()
         return HttpResponse('{"reason":"Chyba na straně platební brány: ' + result['message'][0] + ', zkuste prosím nákup později."}', status=400, content_type='application/json')
 
+    invoice.total_price = total_price
     invoice.trans_id = result['transId'][0]
     cart.delete()
     invoice.save()