From fbb4c959b5f3fed091052fecdab50bd73f7a8fd5 Mon Sep 17 00:00:00 2001
From: Sam Hemelryk <sam@moodle.com>
Date: Thu, 17 May 2012 10:09:27 +1200
Subject: [PATCH] MDL-32881 Prevent course/view.php from being cached

This should prevent browser caching which will ensure that changes made
using the course javascript (e.g. drag/drop, show/hide) will not be 'lost'
by using the browser back button.

This reverts commit 3aaa1843999eeb1832331ec5c8b30865fdba9710.
---
 course/lib.php  | 3 ---
 course/view.php | 3 +++
 index.php       | 3 +++
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/course/lib.php b/course/lib.php
index c412e0b1e7f..6fcfe4a461f 100644
--- a/course/lib.php
+++ b/course/lib.php
@@ -4561,9 +4561,6 @@ function include_course_ajax($course, $modules = array(), $config = null) {
         $PAGE->requires->string_for_js('pluginname', $module);
     }
 
-    // Prevent caching of this page to stop confusion when changing page after making AJAX changes
-    $PAGE->set_cacheable(false);
-
     return true;
 }
 
diff --git a/course/view.php b/course/view.php
index 7a4d7aa37ab..e6bc3039235 100644
--- a/course/view.php
+++ b/course/view.php
@@ -38,6 +38,9 @@
 
     $PAGE->set_url('/course/view.php', $urlparams); // Defined here to avoid notices on errors etc
 
+    // Prevent caching of this page to stop confusion when changing page after making AJAX changes
+    $PAGE->set_cacheable(false);
+
     preload_course_contexts($course->id);
     $context = context_course::instance($course->id, MUST_EXIST);
 
diff --git a/index.php b/index.php
index e07f11ad685..721c40d38d8 100644
--- a/index.php
+++ b/index.php
@@ -41,6 +41,9 @@
     $PAGE->set_url('/', $urlparams);
     $PAGE->set_course($SITE);
 
+    // Prevent caching of this page to stop confusion when changing page after making AJAX changes
+    $PAGE->set_cacheable(false);
+
     if ($CFG->forcelogin) {
         require_login();
     } else {