From: Skylar Kelty <S.Kelty@kent.ac.uk>
Date: Mon, 16 Mar 2015 09:22:53 +0000 (+0000)
Subject: MDL-49489 caching: Prevent full coursecontact purge
X-Git-Tag: v2.9.0-beta~16^2
X-Git-Url: http://git.moodle.org/gw?p=moodle.git;a=commitdiff_plain;h=6a5681db1bfbaf30ee56f87503ea2207eb2dbda9

MDL-49489 caching: Prevent full coursecontact purge
---

diff --git a/lib/coursecatlib.php b/lib/coursecatlib.php
index a027c557cb8..7dad744d63a 100644
--- a/lib/coursecatlib.php
+++ b/lib/coursecatlib.php
@@ -713,7 +713,8 @@ class coursecat implements renderable, cacheable_object, IteratorAggregate {
         if (empty($cacheddata['basic']) || $cacheddata['basic']['roles'] !== $CFG->coursecontact ||
                 $cacheddata['basic']['lastreset'] < time() - self::CACHE_COURSE_CONTACTS_TTL) {
             // Reset cache.
-            $cache->purge();
+            $keys = $DB->get_fieldset_select('course', 'id', '');
+            $cache->delete_many($keys);
             $cache->set('basic', array('roles' => $CFG->coursecontact, 'lastreset' => time()));
             $cacheddata = $cache->get_many(array_merge(array('basic'), array_keys($courses)));
         }