API: Add various filtering options

* API: Add various filtering options (#23158339)

* fix query-param description

* simplify payment provider qs-filter

---------

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

src/pretix/api/views/item.py

@@ -56,10 +56,17 @@ from pretix.base.models import (
 )
 from pretix.base.services.quotas import QuotaAvailability
 from pretix.helpers.dicts import merge_dicts
+from pretix.helpers.i18n import i18ncomp
 
 with scopes_disabled():
     class ItemFilter(FilterSet):
         tax_rate = django_filters.CharFilter(method='tax_rate_qs')
+        search = django_filters.CharFilter(method='search_qs')
+
+        def search_qs(self, queryset, name, value):
+            return queryset.filter(
+                Q(internal_name__icontains=value) | Q(name__icontains=i18ncomp(value))
+            )
 
         def tax_rate_qs(self, queryset, name, value):
             if value in ("0", "None", "0.00"):
@@ -71,6 +78,18 @@ with scopes_disabled():
             model = Item
             fields = ['active', 'category', 'admission', 'tax_rate', 'free_price']
 
+    class ItemVariationFilter(FilterSet):
+        search = django_filters.CharFilter(method='search_qs')
+
+        def search_qs(self, queryset, name, value):
+            return queryset.filter(
+                Q(value__icontains=i18ncomp(value))
+            )
+
+        class Meta:
+            model = ItemVariation
+            fields = ['active']
+
 
 class ItemViewSet(ConditionalListView, viewsets.ModelViewSet):
     serializer_class = ItemSerializer
@@ -140,6 +159,7 @@ class ItemVariationViewSet(viewsets.ModelViewSet):
     serializer_class = ItemVariationSerializer
     queryset = ItemVariation.objects.none()
     filter_backends = (DjangoFilterBackend, TotalOrderingFilter,)
+    filterset_class = ItemVariationFilter
     ordering_fields = ('id', 'position')
     ordering = ('id',)
     permission = None