feat(generic): allow apiview to choose queryset based on renderer

Add additional options to the list of possible querysets, based on the
renderer chosen. This allows users to define separate querysets for
separate renderers.

Closes: #1307

apis_core/generic/api_views.py

@@ -21,9 +21,19 @@ def dispatch(self, *args, **kwargs):
         return super().dispatch(*args, **kwargs)
 
     def get_queryset(self):
+        renderer = getattr(getattr(self, "request", {}), "accepted_renderer", None)
         queryset_methods = module_paths(
             self.model, path="querysets", suffix="ViewSetQueryset"
         )
+        if renderer is not None:
+            prefix = makeclassprefix(renderer.format)
+            queryset_methods = (
+                module_paths(
+                    self.model, path="querysets", suffix=f"{prefix}ViewSetQueryset"
+                )
+                + queryset_methods
+            )
+
         queryset = first_member_match(queryset_methods) or (lambda x: x)
         return queryset(self.model.objects.all())