Vouchers: Allow to set all addons or bundles as included (#3322)

Co-authored-by: Richard Schreiber <schreiber@rami.io>

src/pretix/base/models/orders.py

@@ -2832,8 +2832,12 @@ class CartPosition(AbstractPosition):
         if self.is_bundled:
             bundle = self.addon_to.item.bundles.filter(bundled_item=self.item, bundled_variation=self.variation).first()
             if bundle:
-                listed_price = bundle.designated_price
-                price_after_voucher = bundle.designated_price
+                if self.addon_to.voucher_id and self.addon_to.voucher.all_bundles_included:
+                    listed_price = Decimal('0.00')
+                    price_after_voucher = Decimal('0.00')
+                else:
+                    listed_price = bundle.designated_price
+                    price_after_voucher = bundle.designated_price
 
         if listed_price != self.listed_price or price_after_voucher != self.price_after_voucher:
             self.listed_price = listed_price

src/pretix/base/models/vouchers.py

@@ -296,6 +296,14 @@ class Voucher(LoggedModel):
         verbose_name=_("Shows hidden products that match this voucher"),
         default=True
     )
+    all_addons_included = models.BooleanField(
+        verbose_name=_("Offer all add-on products for free when redeeming this voucher"),
+        default=False
+    )
+    all_bundles_included = models.BooleanField(
+        verbose_name=_("Include all bundled products without a designated price when redeeming this voucher"),
+        default=False
+    )
 
     objects = ScopedManager(organizer='event__organizer')