fix

core/apps/orders/filters/order.py

@@ -14,28 +14,32 @@ class OrderFilter(django_filters.FilterSet):
     )
     project = django_filters.ModelMultipleChoiceFilter(
         field_name='project',
-        queryset=Project.objects.all()
+        queryset=Project.objects.all(),
+        method='filter_by_project_and_folder'
     )
     project_folder = django_filters.ModelMultipleChoiceFilter(
         field_name='project_folder',
-        queryset=ProjectFolder.objects.all()
+        queryset=ProjectFolder.objects.all(),
+        method='filter_by_project_and_folder'
     )
 
     class Meta:
         model = Order
-        fields = [
+        fields = ['wherehouse', 'project', 'project_folder', 'date']
-            'wherehouse', 'project', 'project_folder', 'date',
-        ]
-    
-        def filter_queryset(self, queryset):
-            queryset = super().filter_queryset(queryset)
 
+    def filter_by_project_and_folder(self, queryset, name, value):
         project_ids = self.data.getlist('project')
         folder_ids = self.data.getlist('project_folder')
 
         if project_ids and folder_ids:
-                queryset = queryset.filter(
+            return queryset.filter(
                 Q(project__in=project_ids) | Q(project_folder__in=folder_ids)
             )
 
+        if project_ids:
+            return queryset.filter(project__in=project_ids)
+
+        if folder_ids:
+            return queryset.filter(project_folder__in=folder_ids)
+
         return queryset