From 32b0c696496bbee2e39c41a017a265a2399d37f3 Mon Sep 17 00:00:00 2001
From: Gareth J Barnard <gjbarnard@gmail.com>
Date: Wed, 17 Jul 2013 14:42:50 +0100
Subject: [PATCH] MDL-37333 theme: Fix 'Clear theme caches' redirect.

---
 theme/index.php | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/theme/index.php b/theme/index.php
index 7f6eb61a032..f1ad3a85497 100644
--- a/theme/index.php
+++ b/theme/index.php
@@ -97,11 +97,11 @@ if (!empty($CFG->enabledevicedetection) && empty($device)) {
     $table->head = array(get_string('devicetype', 'admin'), get_string('currenttheme', 'admin'), get_string('info'));
 
     $devices = get_device_type_list();
-    foreach ($devices as $device) {
+    foreach ($devices as $thedevice) {
 
         $headingthemename = ''; // To output the picked theme name when needed
-        $themename = get_selected_theme_for_device_type($device);
-        if (!$themename && $device == 'default') {
+        $themename = get_selected_theme_for_device_type($thedevice);
+        if (!$themename && $thedevice == 'default') {
             $themename = theme_config::DEFAULT_THEME;
         }
 
@@ -112,7 +112,7 @@ if (!empty($CFG->enabledevicedetection) && empty($device)) {
             $themename = clean_param($themename, PARAM_THEME);
             if (empty($themename)) {
                 // Likely the theme has been deleted
-                unset_config(get_device_cfg_var_name($device));
+                unset_config(get_device_cfg_var_name($thedevice));
             } else {
                 $strthemename = get_string('pluginname', 'theme_'.$themename);
                 // link to the screenshot, now mandatory - the image path is hardcoded because we need image from other themes, not the current one
@@ -123,19 +123,19 @@ if (!empty($CFG->enabledevicedetection) && empty($device)) {
                 $headingthemename = $OUTPUT->heading($strthemename, 3);
             }
             // If not default device then show option to unset theme.
-            if ($device != 'default') {
+            if ($thedevice != 'default') {
                 $unsetthemestr = get_string('unsettheme', 'admin');
-                $unsetthemeurl = new moodle_url('/theme/index.php', array('device' => $device, 'sesskey' => sesskey(), 'unsettheme' => true));
+                $unsetthemeurl = new moodle_url('/theme/index.php', array('device' => $thedevice, 'sesskey' => sesskey(), 'unsettheme' => true));
                 $unsetthemebutton = new single_button($unsetthemeurl, $unsetthemestr, 'get');
                 $unsetthemebutton = $OUTPUT->render($unsetthemebutton);
             }
         }
 
-        $deviceurl = new moodle_url('/theme/index.php', array('device' => $device, 'sesskey' => sesskey()));
+        $deviceurl = new moodle_url('/theme/index.php', array('device' => $thedevice, 'sesskey' => sesskey()));
         $select = new single_button($deviceurl, $strthemeselect, 'get');
 
         $table->data[] = array(
-            $OUTPUT->heading(ucfirst($device), 3),
+            $OUTPUT->heading(ucfirst($thedevice), 3),
             $screenshotcell,
             $headingthemename . $OUTPUT->render($select) . $unsetthemebutton
         );
@@ -217,7 +217,11 @@ if (!empty($CFG->enabledevicedetection) && empty($device)) {
 echo $OUTPUT->header('themeselector');
 echo $OUTPUT->heading($heading);
 
-echo $OUTPUT->single_button(new moodle_url('index.php', array('sesskey' => sesskey(), 'reset' => 1, 'device' => $device)), get_string('themeresetcaches', 'admin'));
+$params = array('sesskey' => sesskey(), 'reset' => 1);
+if (!empty($device)) {
+    $params['device'] = $device;
+}
+echo $OUTPUT->single_button(new moodle_url('index.php', $params), get_string('themeresetcaches', 'admin'));
 
 echo html_writer::table($table);