Allow to set privacy policy URL per language (#3146)

src/pretix/api/serializers/i18n.py

@@ -20,6 +20,7 @@
 # <https://www.gnu.org/licenses/>.
 #
 from django.conf import settings
+from django.core.validators import URLValidator
 from i18nfield.fields import I18nCharField, I18nTextField
 from i18nfield.strings import LazyI18nString
 from rest_framework.exceptions import ValidationError
@@ -69,3 +70,17 @@ class I18nAwareModelSerializer(ModelSerializer):
 
 I18nAwareModelSerializer.serializer_field_mapping[I18nCharField] = I18nField
 I18nAwareModelSerializer.serializer_field_mapping[I18nTextField] = I18nField
+
+
+class I18nURLField(I18nField):
+    def to_internal_value(self, value):
+        value = super().to_internal_value(value)
+        if not value:
+            return value
+        if isinstance(value.data, dict):
+            for v in value.data.values():
+                if v:
+                    URLValidator()(v)
+        else:
+            URLValidator()(value.data)
+        return value

src/pretix/base/forms/__init__.py

@@ -36,11 +36,13 @@ import logging
 
 import i18nfield.forms
 from django import forms
+from django.core.validators import URLValidator
 from django.forms.models import ModelFormMetaclass
 from django.utils.crypto import get_random_string
 from django.utils.translation import gettext_lazy as _
 from formtools.wizard.views import SessionWizardView
 from hierarkey.forms import HierarkeyForm
+from i18nfield.strings import LazyI18nString
 
 from pretix.base.reldate import RelativeDateField, RelativeDateTimeField
 
@@ -222,3 +224,17 @@ class SecretKeySettingsField(forms.CharField):
         if value == SECRET_REDACTED:
             return
         return super().run_validators(value)
+
+
+class I18nURLFormField(i18nfield.forms.I18nFormField):
+    def clean(self, value) -> LazyI18nString:
+        value = super().clean(value)
+        if not value:
+            return value
+        if isinstance(value.data, dict):
+            for v in value.data.values():
+                if v:
+                    URLValidator()(v)
+        else:
+            URLValidator()(value.data)
+        return value

src/pretix/base/settings.py

@@ -63,7 +63,8 @@ from rest_framework import serializers
 from pretix.api.serializers.fields import (
     ListMultipleChoiceField, UploadedFileField,
 )
-from pretix.api.serializers.i18n import I18nField
+from pretix.api.serializers.i18n import I18nField, I18nURLField
+from pretix.base.forms import I18nURLFormField
 from pretix.base.models.tax import VAT_ID_COUNTRIES, TaxRule
 from pretix.base.reldate import (
     RelativeDateField, RelativeDateTimeField, RelativeDateWrapper,
@@ -1689,14 +1690,15 @@ DEFAULTS = {
     },
     'privacy_url': {
         'default': None,
-        'type': str,
+        'type': LazyI18nString,
-        'form_class': forms.URLField,
+        'form_class': I18nURLFormField,
         'form_kwargs': dict(
             label=_("Privacy Policy URL"),
             help_text=_("This should point e.g. to a part of your website that explains how you use data gathered in "
                         "your ticket shop."),
+            widget=I18nTextInput,
         ),
-        'serializer_class': serializers.URLField,
+        'serializer_class': I18nURLField,
     },
     'confirm_texts': {
         'default': LazyI18nStringList(),