From 5052356574813655713ae123204b57a3b45000f4 Mon Sep 17 00:00:00 2001
From: Sam Hemelryk <sam@moodle.com>
Date: Fri, 11 Jan 2013 17:08:57 +1300
Subject: [PATCH] MDL-37470 cache: definitions can now be purged through config
 screen

---
 cache/admin.php    | 10 +++++++++-
 cache/locallib.php |  6 +++++-
 lang/en/cache.php  |  1 +
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/cache/admin.php b/cache/admin.php
index cf3de513c2beb..56592ee74a603 100644
--- a/cache/admin.php
+++ b/cache/admin.php
@@ -129,7 +129,7 @@
             }
             break;
         case 'editdefinitionmapping' : // Edit definition mappings.
-            $definition = required_param('definition', PARAM_TEXT);
+            $definition = required_param('definition', PARAM_ALPHANUMEXT);
             $title = get_string('editdefinitionmappings', 'cache', $definition);
             $mform = new cache_definition_mappings_form($PAGE->url, array('definition' => $definition));
             if ($mform->is_cancelled()) {
@@ -167,6 +167,14 @@
             }
             break;
 
+        case 'purgedefinition': // Purge a specific definition.
+            $definition = required_param('definition', PARAM_ALPHANUMEXT);
+            list($component, $area) = explode('/', $definition, 2);
+            cache_helper::purge_by_definition($component, $area);
+            redirect($PAGE->url, get_string('purgedefinitionsuccess', 'cache'), 5);
+            break;
+
+        case 'purgestore':
         case 'purge': // Purge a store cache.
             $store = required_param('store', PARAM_TEXT);
             cache_helper::purge_store($store);
diff --git a/cache/locallib.php b/cache/locallib.php
index 76888b7e78271..70c061e15425d 100644
--- a/cache/locallib.php
+++ b/cache/locallib.php
@@ -695,6 +695,10 @@ public static function get_definition_actions(context $context) {
                 array(
                     'text' => get_string('editmappings', 'cache'),
                     'url' => new moodle_url('/cache/admin.php', array('action' => 'editdefinitionmapping', 'sesskey' => sesskey()))
+                ),
+                array(
+                    'text' => get_string('purge', 'cache'),
+                    'url' => new moodle_url('/cache/admin.php', array('action' => 'purgedefinition', 'sesskey' => sesskey()))
                 )
             );
         }
@@ -724,7 +728,7 @@ public static function get_store_instance_actions($name, array $storedetails) {
             }
             $actions[] = array(
                 'text' => get_string('purge', 'cache'),
-                'url' => new moodle_url($baseurl, array('action' => 'purge'))
+                'url' => new moodle_url($baseurl, array('action' => 'purgestore'))
             );
         }
         return $actions;
diff --git a/lang/en/cache.php b/lang/en/cache.php
index 208e9a455d923..64d772be57c1c 100644
--- a/lang/en/cache.php
+++ b/lang/en/cache.php
@@ -92,6 +92,7 @@
 $string['plugin'] = 'Plugin';
 $string['pluginsummaries'] = 'Installed cache stores';
 $string['purge'] = 'Purge';
+$string['purgedefinitionsuccess'] = 'Successfully purged the requested definition.';
 $string['purgestoresuccess'] = 'Successfully purged the requested store.';
 $string['requestcount'] = 'Test with {$a} requests';
 $string['rescandefinitions'] = 'Rescan definitions';