Add option to exclude Sales Channels from invoice generation

src/pretix/base/services/invoices.py

@@ -257,7 +257,8 @@ def invoice_pdf_task(invoice: int):
 
 
 def invoice_qualified(order: Order):
-    if order.total == Decimal('0.00') or order.require_approval:
+    if order.total == Decimal('0.00') or order.require_approval or \
+            order.sales_channel not in order.event.settings.get('invoice_generate_sales_channels'):
         return False
     return True
 

src/pretix/base/settings.py

@@ -145,6 +145,10 @@ DEFAULTS = {
         'default': 'False',
         'type': str
     },
+    'invoice_generate_sales_channels': {
+        'default': json.dumps(['web']),
+        'type': list
+    },
     'invoice_address_from': {
         'default': '',
         'type': str

src/pretix/control/forms/event.py

@@ -18,6 +18,7 @@ from i18nfield.forms import (
 )
 from pytz import common_timezones, timezone
 
+from pretix.base.channels import get_all_sales_channels
 from pretix.base.forms import I18nModelForm, PlaceholderValidator, SettingsForm
 from pretix.base.models import Event, Organizer, TaxRule
 from pretix.base.models.event import EventMetaValue, SubEvent
@@ -664,6 +665,13 @@ class InvoiceSettingsForm(SettingsForm):
         ),
         help_text=_("Invoices will never be automatically generated for free orders.")
     )
+    invoice_generate_sales_channels = forms.MultipleChoiceField(
+        label=_('Generate invoices for Sales channels'),
+        choices=[],
+        widget=forms.CheckboxSelectMultiple,
+        help_text=_("If you have enabled invoice generation in the previous setting, you can limit it here to specific "
+                    "sales channels.")
+    )
     invoice_attendee_name = forms.BooleanField(
         label=_("Show attendee names on invoices"),
         required=False
@@ -779,6 +787,9 @@ class InvoiceSettingsForm(SettingsForm):
         self.fields['invoice_numbers_prefix'].widget.attrs['placeholder'] = event.slug.upper() + '-'
         locale_names = dict(settings.LANGUAGES)
         self.fields['invoice_language'].choices = [('__user__', _('The user\'s language'))] + [(a, locale_names[a]) for a in event.settings.locales]
+        self.fields['invoice_generate_sales_channels'].choices = (
+            (c.identifier, c.verbose_name) for c in get_all_sales_channels().values()
+        )
 
 
 def multimail_validate(val):

src/pretix/control/templates/pretixcontrol/event/invoicing.html

@@ -9,6 +9,7 @@
         <fieldset>
             <legend>{% trans "General settings" %}</legend>
             {% bootstrap_field form.invoice_generate layout="control" %}
+            {% bootstrap_field form.invoice_generate_sales_channels layout="control" %}
             {% bootstrap_field form.invoice_email_attachment layout="control" %}
             {% bootstrap_field form.invoice_numbers_prefix layout="control" %}
             {% bootstrap_field form.invoice_numbers_consecutive layout="control" %}

src/pretix/presale/views/order.py

@@ -122,10 +122,13 @@ class OrderDetails(EventViewMixin, OrderDetailMixin, CartMixin, TemplateView):
         )
         ctx['invoices'] = list(self.order.invoices.all())
         can_generate_invoice = (
-            self.request.event.settings.get('invoice_generate') in ('user', 'True')
-            or (
-                self.request.event.settings.get('invoice_generate') == 'paid'
-                and self.order.status == Order.STATUS_PAID
+            self.order.sales_channel in self.request.event.settings.get('invoice_generate_sales_channels')
+            and (
+                self.request.event.settings.get('invoice_generate') in ('user', 'True')
+                or (
+                    self.request.event.settings.get('invoice_generate') == 'paid'
+                    and self.order.status == Order.STATUS_PAID
+                )
             )
         )
         ctx['can_generate_invoice'] = invoice_qualified(self.order) and can_generate_invoice
@@ -516,10 +519,13 @@ class OrderInvoiceCreate(EventViewMixin, OrderDetailMixin, View):
 
     def post(self, request, *args, **kwargs):
         can_generate_invoice = (
-            self.request.event.settings.get('invoice_generate') in ('user', 'True')
-            or (
-                self.request.event.settings.get('invoice_generate') == 'paid'
-                and self.order.status == Order.STATUS_PAID
+            self.order.sales_channel in self.request.event.settings.get('invoice_generate_sales_channels')
+            and (
+                self.request.event.settings.get('invoice_generate') in ('user', 'True')
+                or (
+                    self.request.event.settings.get('invoice_generate') == 'paid'
+                    and self.order.status == Order.STATUS_PAID
+                )
             )
         )
         if not can_generate_invoice or not invoice_qualified(self.order):