From cd1b845f6243b691b68472f70e6eeff0b7209773 Mon Sep 17 00:00:00 2001
From: Dan Poltawski <dan@moodle.com>
Date: Wed, 26 Aug 2015 08:02:42 +0100
Subject: [PATCH] MDL-50641 rss: fix front page rss links

Fallback to guest user token when no user is specified in rss_get_url
rather than generating a junk token which is no use to anyone, this
matches existing logic which has been in place in forum for a while
and avoids custom handling all over the place.
---
 lib/rsslib.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/rsslib.php b/lib/rsslib.php
index 8312c9266a4..74696f885be 100644
--- a/lib/rsslib.php
+++ b/lib/rsslib.php
@@ -81,6 +81,9 @@ function rss_get_link($contextid, $userid, $componentname, $id, $tooltiptext='')
 function rss_get_url($contextid, $userid, $componentname, $additionalargs) {
     global $CFG;
     require_once($CFG->libdir.'/filelib.php');
+    if (empty($userid)) {
+        $userid = guest_user()->id;
+    }
     $usertoken = rss_get_token($userid);
     return get_file_url($contextid.'/'.$usertoken.'/'.$componentname.'/'.$additionalargs.'/rss.xml', null, 'rssfile');
 }