X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/756b55bbffedb6e5fde91f9fbc61f5a382f20705..refs/pull/3072/head:/app/Entities/Tools/BookContents.php

diff --git a/app/Entities/Tools/BookContents.php b/app/Entities/Tools/BookContents.php
index 8622d5e12..9b2190ca2 100644
--- a/app/Entities/Tools/BookContents.php
+++ b/app/Entities/Tools/BookContents.php
@@ -67,7 +67,7 @@ class BookContents
         $all->each(function (Entity $entity) use ($renderPages) {
             $entity->setRelation('book', $this->book);
 
-            if ($renderPages && $entity->isA('page')) {
+            if ($renderPages && $entity instanceof Page) {
                 $entity->html = (new PageContent($entity))->render();
             }
         });
@@ -151,7 +151,7 @@ class BookContents
 
         $priorityChanged = intval($model->priority) !== intval($sortMapItem->sort);
         $bookChanged = intval($model->book_id) !== intval($sortMapItem->book);
-        $chapterChanged = ($sortMapItem->type === 'page') && intval($model->chapter_id) !== $sortMapItem->parentChapter;
+        $chapterChanged = ($model instanceof Page) && intval($model->chapter_id) !== $sortMapItem->parentChapter;
 
         if ($bookChanged) {
             $model->changeBook($sortMapItem->book);