Vouchers: Bug in export, default mode

src/pretix/base/models/vouchers.py

@@ -115,7 +115,7 @@ class Voucher(LoggedModel):
         verbose_name=_("Price mode"),
         max_length=100,
         choices=PRICE_MODES,
-        default='set'
+        default='none'
     )
     value = models.DecimalField(
         verbose_name=_("Voucher value"),

src/pretix/control/views/vouchers.py

@@ -78,7 +78,7 @@ class VoucherList(EventPermissionRequiredMixin, ListView):
                 _("Yes") if v.block_quota else _("No"),
                 _("Yes") if v.allow_ignore_quota else _("No"),
                 v.get_price_mode_display(),
-                str(v.value) if v.value else "",
+                str(v.value) if v.value is not None else "",
                 v.tag,
                 str(v.redeemed),
                 str(v.max_usages)