From 323d04d5d927a5fd89a413d0eebf30c0adc15563 Mon Sep 17 00:00:00 2001
From: Josh Crawford <joshua@sgroup.com.au>
Date: Tue, 20 Feb 2018 21:34:31 +1100
Subject: [PATCH] =?UTF-8?q?Fix=20fatal=20error=20when=20the=20Redactor=20p?=
 =?UTF-8?q?lugin=20isn=E2=80=99t=20installed,=20due=20to=20utalising=20its?=
 =?UTF-8?q?=20hook?=
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Content-Type: text/plain; charset=UTF-8
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---
 src/ExpandedSingles.php | 34 ++++++++++++++++++----------------
 1 file changed, 18 insertions(+), 16 deletions(-)

diff --git a/src/ExpandedSingles.php b/src/ExpandedSingles.php
index 6cfb5bb..975d425 100755
--- a/src/ExpandedSingles.php
+++ b/src/ExpandedSingles.php
@@ -60,26 +60,28 @@ public function init()
         });
 
         // Hook onto a special hook from Redactor - it handles singles a little differently!
-        Event::on(RedactorField::class, RedactorField::EVENT_REGISTER_LINK_OPTIONS, function(RegisterLinkOptionsEvent $event) {
-            
-            // Have we enabled the plugin?
-            if ($this->getSettings()->expandSingles) {
-
-                foreach ($event->linkOptions as $i => $linkOption) {
-
-                    // Only apply this for entries, and if there are any singles
-                    if ($linkOption['refHandle'] === 'entry') {
-                        if (in_array('singles', $linkOption['sources'])) {
-                            $modifiedSources = $this->singlesList->createSectionedSinglesList($linkOption['sources']);
-
-                            if ($modifiedSources) {
-                                $event->linkOptions[$i]['sources'] = $modifiedSources;
+        if (class_exists(RedactorField::class)) {
+            Event::on(RedactorField::class, RedactorField::EVENT_REGISTER_LINK_OPTIONS, function(RegisterLinkOptionsEvent $event) {
+                
+                // Have we enabled the plugin?
+                if ($this->getSettings()->expandSingles) {
+
+                    foreach ($event->linkOptions as $i => $linkOption) {
+
+                        // Only apply this for entries, and if there are any singles
+                        if ($linkOption['refHandle'] === 'entry') {
+                            if (in_array('singles', $linkOption['sources'])) {
+                                $modifiedSources = $this->singlesList->createSectionedSinglesList($linkOption['sources']);
+
+                                if ($modifiedSources) {
+                                    $event->linkOptions[$i]['sources'] = $modifiedSources;
+                                }
                             }
                         }
                     }
                 }
-            }
-        });
+            });
+        }
     }
 
     // Protected Methods