From ba00e20234eadae66f105f8bda64e39beed9a92d Mon Sep 17 00:00:00 2001
From: Patrick Cloke <clokep@users.noreply.github.com>
Date: Thu, 21 Oct 2021 14:39:16 -0400
Subject: Add a thread relation type per MSC3440. (#11088)

Adds experimental support for MSC3440's `io.element.thread` relation
type (and the aggregation for it).
---
 synapse/rest/client/relations.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'synapse/rest')

diff --git a/synapse/rest/client/relations.py b/synapse/rest/client/relations.py
index d695c18be2..58f6699073 100644
--- a/synapse/rest/client/relations.py
+++ b/synapse/rest/client/relations.py
@@ -128,9 +128,10 @@ class RelationSendServlet(RestServlet):
 
         content["m.relates_to"] = {
             "event_id": parent_id,
-            "key": aggregation_key,
             "rel_type": relation_type,
         }
+        if aggregation_key is not None:
+            content["m.relates_to"]["key"] = aggregation_key
 
         event_dict = {
             "type": event_type,
-- 
cgit 1.5.1