Add a constant for receipt types (m.read). (#11531)

And expand some type hints in the receipts storage module.

1 files changed, 2 insertions, 1 deletions

diff --git a/synapse/rest/client/notifications.py b/synapse/rest/client/notifications.py
index d1d8a984c6..b12a332776 100644
--- a/synapse/rest/client/notifications.py
+++ b/synapse/rest/client/notifications.py
@@ -15,6 +15,7 @@
 import logging
 from typing import TYPE_CHECKING, Tuple
 
+from synapse.api.constants import ReceiptTypes
 from synapse.events.utils import format_event_for_client_v2_without_room_id
 from synapse.http.server import HttpServer
 from synapse.http.servlet import RestServlet, parse_integer, parse_string
@@ -54,7 +55,7 @@ class NotificationsServlet(RestServlet):
         )
 
         receipts_by_room = await self.store.get_receipts_for_user_with_orderings(
-            user_id, "m.read"
+            user_id, ReceiptTypes.READ
         )
 
         notif_event_ids = [pa["event_id"] for pa in push_actions]