From c09b5c5b673cebb7f0470debe0b6df8fbc7c93f8 Mon Sep 17 00:00:00 2001
From: Tim Otten <totten@civicrm.org>
Date: Wed, 21 Apr 2021 09:43:56 -0700
Subject: [PATCH] Extensions - Setup <classloader> during "enable" and
 "uninstall"

This is an analog/follow-up to https://github.com/civicrm/civicrm-core/pull/20091

Why is this necessary? Recall that a typical admin will go through this lifecycle:

1. Enable extension $x
2. Disable extension $x
3. Either:
   * (a) Re-enable extension $x
   * (b) Uninstall extension $x

Step `#2` disables the classloader for purposes of regular page-loading. However, when you
get to step `#3a` or `#3b`, then you need the classloader again.
---
 CRM/Extension/Manager/Module.php | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/CRM/Extension/Manager/Module.php b/CRM/Extension/Manager/Module.php
index b66f633c31..f4ce5ceb78 100644
--- a/CRM/Extension/Manager/Module.php
+++ b/CRM/Extension/Manager/Module.php
@@ -29,7 +29,7 @@ class CRM_Extension_Manager_Module extends CRM_Extension_Manager_Base {
    * @param CRM_Extension_Info $info
    */
   public function onPreInstall(CRM_Extension_Info $info) {
-    CRM_Extension_System::singleton()->getClassLoader()->installExtension($info, dirname($this->mapper->keyToPath($info->key)));
+    $this->registerClassloader($info);
     $this->callHook($info, 'install');
     $this->callHook($info, 'enable');
   }
@@ -71,6 +71,7 @@ class CRM_Extension_Manager_Module extends CRM_Extension_Manager_Base {
    * @return bool
    */
   public function onPreUninstall(CRM_Extension_Info $info) {
+    $this->registerClassloader($info);
     $this->callHook($info, 'uninstall');
     return TRUE;
   }
@@ -92,7 +93,15 @@ class CRM_Extension_Manager_Module extends CRM_Extension_Manager_Base {
    * @param CRM_Extension_Info $info
    */
   public function onPreEnable(CRM_Extension_Info $info) {
+    $this->registerClassloader($info);
     $this->callHook($info, 'enable');
   }
 
+  /**
+   * @param CRM_Extension_Info $info
+   */
+  private function registerClassloader($info) {
+    CRM_Extension_System::singleton()->getClassLoader()->installExtension($info, dirname($this->mapper->keyToPath($info->key)));
+  }
+
 }
-- 
2.25.1