diff options
| -rw-r--r-- | rest_framework/generics.py | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/rest_framework/generics.py b/rest_framework/generics.py index 42204841..aea636f1 100644 --- a/rest_framework/generics.py +++ b/rest_framework/generics.py @@ -189,7 +189,13 @@ class GenericAPIView(views.APIView): """ Returns the list of filter backends that this view requires. """ - filter_backends = self.filter_backends or [] + if self.filter_backends is None: + filter_backends = [] + else: + # Note that we are returning a *copy* of the class attribute, + # so that it is safe for the view to mutate it if needed. + filter_backends = list(self.filter_backends) + if not filter_backends and self.filter_backend: warnings.warn( 'The `filter_backend` attribute and `FILTER_BACKEND` setting ' @@ -199,6 +205,7 @@ class GenericAPIView(views.APIView): PendingDeprecationWarning, stacklevel=2 ) filter_backends = [self.filter_backend] + return filter_backends |