[FIX] bus: correctly compute presence of partners with multiple users

closes odoo/odoo#30344

addons/bus/models/res_partner.py

@@ -15,13 +15,14 @@ class ResPartner(models.Model):
         self.env.cr.execute("""
             SELECT
                 U.partner_id as id,
-                CASE WHEN age(now() AT TIME ZONE 'UTC', B.last_poll) > interval %s THEN 'offline'
-                     WHEN age(now() AT TIME ZONE 'UTC', B.last_presence) > interval %s THEN 'away'
+                CASE WHEN age(now() AT TIME ZONE 'UTC', max(B.last_poll)) > interval %s THEN 'offline'
+                     WHEN age(now() AT TIME ZONE 'UTC', max(B.last_presence)) > interval %s THEN 'away'
                      ELSE 'online'
                 END as status
             FROM bus_presence B
                 JOIN res_users U ON B.user_id = U.id
             WHERE U.partner_id IN %s AND U.active = 't'
+         GROUP BY U.partner_id
         """, ("%s seconds" % DISCONNECTION_TIMER, "%s seconds" % AWAY_TIMER, tuple(self.ids)))
         res = dict(((status['id'], status['status']) for status in self.env.cr.dictfetchall()))
         for partner in self: