From 8dba43ba0b3d356761675402b58c0bbe4d09dc9a Mon Sep 17 00:00:00 2001
From: Ben Thomson <git@alfreido.com>
Date: Wed, 10 Jun 2020 11:46:17 +0800
Subject: [PATCH] Allow plugin autoloaders to load on restricted pages and
 actions (#5120)

Allow plugin autoloaders to load, even on restricted pages. This allows (enabled) plugins to load their autoloaders on any pages, allowing includes in migration files to run.

Fixes #5110.
---
 modules/system/classes/PluginManager.php | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/modules/system/classes/PluginManager.php b/modules/system/classes/PluginManager.php
index 0932a5a43..e5a9b590e 100644
--- a/modules/system/classes/PluginManager.php
+++ b/modules/system/classes/PluginManager.php
@@ -224,9 +224,9 @@ class PluginManager
         }
 
         /**
-         * Verify that the provided plugin should be registered
+         * Prevent autoloaders from loading if plugin is disabled
          */
-        if (!$plugin || $plugin->disabled || (self::$noInit && !$plugin->elevated)) {
+        if ($plugin->disabled) {
             return;
         }
 
@@ -238,6 +238,13 @@ class PluginManager
             ComposerManager::instance()->autoload($pluginPath . '/vendor');
         }
 
+        /**
+         * Disable plugin registration for restricted pages, unless elevated
+         */
+        if (self::$noInit && !$plugin->elevated) {
+            return;
+        }
+
         /**
          * Run the plugin's register() method
          */