From 47b7b096430489821abd641603ba61d5ee152292 Mon Sep 17 00:00:00 2001
From: Joel Collins <joel@jtcollins.net>
Date: Fri, 21 Aug 2020 14:29:30 +0100
Subject: [PATCH] Fix #3

---
 labthings_client/affordances.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/labthings_client/affordances.py b/labthings_client/affordances.py
index 1f2d30b..8a291ff 100644
--- a/labthings_client/affordances.py
+++ b/labthings_client/affordances.py
@@ -47,16 +47,20 @@ def set(self, *args, **kwargs):
         return self.put(*args, **kwargs)
 
     def put(self, value):
+        if value is None:
+            value = {}
         if not self.read_only:
-            r = requests.put(self.self_url, json=value or {})
+            r = requests.put(self.self_url, json=value)
             r.raise_for_status()
             return r.json()
         else:
             raise AttributeError("Can't set attribute, is read-only")
 
     def post(self, value):
+        if value is None:
+            value = {}
         if not self.read_only:
-            r = requests.post(self.self_url, json=value or {})
+            r = requests.post(self.self_url, json=value)
             r.raise_for_status()
             return r.json()
         else: