[django-filter] Make djangorestframework dependency optional

Author: huynguyengl99

stubs/django-filter/METADATA.toml

@@ -1,6 +1,6 @@
 version = "25.1.*"
 upstream_repository = "https://github.com/carltongibson/django-filter/"
-requires = ["django-stubs", "djangorestframework-stubs"]
+requires = ["django-stubs"]
 
 [tool.stubtest]
 mypy_plugins = ["mypy_django_plugin.main"]

stubs/django-filter/django_filters/rest_framework/backends.pyi

@@ -1,27 +1,30 @@
 from typing import Any
+from typing_extensions import TypeAlias
 
 from django.db.models import QuerySet
 from django.http import HttpRequest
 from django_filters.filterset import FilterSetMetaclass
-from rest_framework.views import APIView
 
 from . import filterset
 
+# APIView placeholder - djangorestframework is optional, so we use Any for compatibility
+_APIView: TypeAlias = Any
+
 class DjangoFilterBackend:
     filterset_base: FilterSetMetaclass = ...
     raise_exception: bool
     @property
     def template(self) -> str: ...
 
     # Works with any model type
-    def get_filterset(self, request: HttpRequest, queryset: QuerySet[Any], view: APIView) -> filterset.FilterSet | None: ...
+    def get_filterset(self, request: HttpRequest, queryset: QuerySet[Any], view: _APIView) -> filterset.FilterSet | None: ...
 
     # Any model queryset
-    def get_filterset_class(self, view: APIView, queryset: QuerySet[Any] | None = None) -> type[filterset.FilterSet] | None: ...
+    def get_filterset_class(self, view: _APIView, queryset: QuerySet[Any] | None = None) -> type[filterset.FilterSet] | None: ...
 
     # Kwargs vary by filterset
-    def get_filterset_kwargs(self, request: HttpRequest, queryset: QuerySet[Any], view: APIView) -> dict[str, Any]: ...
+    def get_filterset_kwargs(self, request: HttpRequest, queryset: QuerySet[Any], view: _APIView) -> dict[str, Any]: ...
 
     # Filters any model type
-    def filter_queryset(self, request: HttpRequest, queryset: QuerySet[Any], view: APIView) -> QuerySet[Any]: ...
-    def to_html(self, request: HttpRequest, queryset: QuerySet[Any], view: APIView) -> str: ...  # Renders form for any model
+    def filter_queryset(self, request: HttpRequest, queryset: QuerySet[Any], view: _APIView) -> QuerySet[Any]: ...
+    def to_html(self, request: HttpRequest, queryset: QuerySet[Any], view: _APIView) -> str: ...  # Renders form for any model