Remove allow_empty.

Closes #1774.

docs/api-guide/generic-views.md

@@ -212,8 +212,6 @@ Provides a `.list(request, *args, **kwargs)` method, that implements listing a q
 
 If the queryset is populated, this returns a `200 OK` response, with a serialized representation of the queryset as the body of the response.  The response data may optionally be paginated.
 
-If the queryset is empty this returns a `200 OK` response, unless the `.allow_empty` attribute on the view is set to `False`, in which case it will return a `404 Not Found`.
-
 ## CreateModelMixin
 
 Provides a `.create(request, *args, **kwargs)` method, that implements creating and saving a new model instance.

rest_framework/generics.py

@@ -82,7 +82,6 @@ class GenericAPIView(views.APIView):
     pk_url_kwarg = 'pk'
     slug_url_kwarg = 'slug'
     slug_field = 'slug'
-    allow_empty = True
 
     def get_serializer_context(self):
         """
@@ -140,16 +139,7 @@ class GenericAPIView(views.APIView):
             if not page_size:
                 return None
 
-        if not self.allow_empty:
-            warnings.warn(
-                'The `allow_empty` parameter is deprecated. '
-                'To use `allow_empty=False` style behavior, You should override '
-                '`get_queryset()` and explicitly raise a 404 on empty querysets.',
-                DeprecationWarning, stacklevel=2
-            )
-
-        paginator = self.paginator_class(queryset, page_size,
-                                         allow_empty_first_page=self.allow_empty)
+        paginator = self.paginator_class(queryset, page_size)
         page_kwarg = self.kwargs.get(self.page_kwarg)
         page_query_param = self.request.QUERY_PARAMS.get(self.page_kwarg)
         page = page_kwarg or page_query_param or 1