From 535653877109f098789dc93ac944aa722a6b1238 Mon Sep 17 00:00:00 2001
From: Cristopher Hernandez <22552070+CristopherH95@users.noreply.github.com>
Date: Sat, 8 Nov 2025 09:42:16 -0800
Subject: [PATCH 1/2] Implement afilter_queryset method

---
 adrf/generics.py | 14 +++++++++++++-
 adrf/mixins.py   |  2 +-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/adrf/generics.py b/adrf/generics.py
index d15722f..eaffe41 100644
--- a/adrf/generics.py
+++ b/adrf/generics.py
@@ -31,7 +31,7 @@ async def aget_object(self):
         queryset lookups.  Eg if objects are referenced using multiple
         keyword arguments in the url conf.
         """
-        queryset = self.filter_queryset(self.get_queryset())
+        queryset = await self.afilter_queryset(self.get_queryset())
 
         # Perform the lookup filtering.
         lookup_url_kwarg = self.lookup_url_kwarg or self.lookup_field
@@ -51,6 +51,18 @@ async def aget_object(self):
 
         return obj
 
+    async def afilter_queryset(self, queryset):
+        """
+        Given a queryset, filter it with whichever filter backend is in use.
+        """
+        for backend in list(self.filter_backends):
+            backend_instance = backend()
+            if asyncio.iscoroutinefunction(backend_instance.filter_queryset):
+                queryset = await backend_instance.filter_queryset(self.request, queryset, self)
+            else:
+                queryset = await sync_to_async(backend_instance.filter_queryset)(self.request, queryset, self)
+        return queryset
+
     def paginate_queryset(self, queryset):
         """
         Return a single page of results, or `None` if pagination is disabled.
diff --git a/adrf/mixins.py b/adrf/mixins.py
index e9217d8..08a7cea 100644
--- a/adrf/mixins.py
+++ b/adrf/mixins.py
@@ -35,7 +35,7 @@ class ListModelMixin(mixins.ListModelMixin):
     """
 
     async def alist(self, *args, **kwargs):
-        queryset = self.filter_queryset(self.get_queryset())
+        queryset = await self.afilter_queryset(self.get_queryset())
 
         page = await self.apaginate_queryset(queryset)
         if page is not None:

From 04bec346c0e3b975e0da8e18b426f639a02151c0 Mon Sep 17 00:00:00 2001
From: Cristopher Hernandez <22552070+CristopherH95@users.noreply.github.com>
Date: Sat, 8 Nov 2025 15:28:51 -0800
Subject: [PATCH 2/2] Reformat code

---
 adrf/generics.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/adrf/generics.py b/adrf/generics.py
index eaffe41..61e241c 100644
--- a/adrf/generics.py
+++ b/adrf/generics.py
@@ -58,9 +58,13 @@ async def afilter_queryset(self, queryset):
         for backend in list(self.filter_backends):
             backend_instance = backend()
             if asyncio.iscoroutinefunction(backend_instance.filter_queryset):
-                queryset = await backend_instance.filter_queryset(self.request, queryset, self)
+                queryset = await backend_instance.filter_queryset(
+                    self.request, queryset, self
+                )
             else:
-                queryset = await sync_to_async(backend_instance.filter_queryset)(self.request, queryset, self)
+                queryset = await sync_to_async(backend_instance.filter_queryset)(
+                    self.request, queryset, self
+                )
         return queryset
 
     def paginate_queryset(self, queryset):