From cc9401f82cdccd99c2cbf761ab501c74bcb68571 Mon Sep 17 00:00:00 2001
From: Fabian Schaffert <devmapal@users.noreply.github.com>
Date: Thu, 5 Jan 2017 22:26:06 +0100
Subject: [PATCH] WebsocketBinding.group_names() is a classmethod (#460)

Child classes of WebsocketBinding must overwrite it as a classmethod, not as an
instance method.
---
 docs/binding.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/binding.rst b/docs/binding.rst
index e8ce3a8..6ee77d4 100644
--- a/docs/binding.rst
+++ b/docs/binding.rst
@@ -69,7 +69,8 @@ Start off like this::
         stream = "intval"
         fields = ["name", "value"]
 
-        def group_names(self, instance, action):
+        @classmethod
+        def group_names(cls, instance, action):
             return ["intval-updates"]
 
         def has_permission(self, user, action, pk):