Issue #1707 - Add documentation about the caching of `GenericAPIView.queryset`

to the `queryset` property, `get_queryset()`, and do generic-views.md; remove
changes to the viewsets.md documentation from my last commit.

1 files changed, 8 insertions, 0 deletions

diff --git a/rest_framework/generics.py b/rest_framework/generics.py
index 7bac510f..65ccd952 100644
--- a/rest_framework/generics.py
+++ b/rest_framework/generics.py
@@ -43,6 +43,10 @@ class GenericAPIView(views.APIView):
 
     # You'll need to either set these attributes,
     # or override `get_queryset()`/`get_serializer_class()`.
+    # If you are overriding a view method, it is important that you call
+    # `get_queryset()` instead of accessing the `queryset` property directly,
+    # as `queryset` will get evaluated only once, and those results are cached
+    # for all subsequent requests.
     queryset = None
     serializer_class = None
 
@@ -256,6 +260,10 @@ class GenericAPIView(views.APIView):
         This must be an iterable, and may be a queryset.
         Defaults to using `self.queryset`.
 
+        This method should always be used rather than accessing `self.queryset`
+        directly, as `self.queryset` gets evaluated only once, and those results
+        are cached for all subsequent requests.
+
         You may want to override this if you need to provide different
         querysets depending on the incoming request.