X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/c429cf78187e80deb63982a282a1c6889f30291a..refs/pull/3406/head:/app/Entities/Tools/SiblingFetcher.php

diff --git a/app/Entities/Tools/SiblingFetcher.php b/app/Entities/Tools/SiblingFetcher.php
index e9dad0e13..617ef4a62 100644
--- a/app/Entities/Tools/SiblingFetcher.php
+++ b/app/Entities/Tools/SiblingFetcher.php
@@ -5,6 +5,8 @@ namespace BookStack\Entities\Tools;
 use BookStack\Entities\EntityProvider;
 use BookStack\Entities\Models\Book;
 use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
 use Illuminate\Support\Collection;
 
 class SiblingFetcher
@@ -18,18 +20,18 @@ class SiblingFetcher
         $entities = [];
 
         // Page in chapter
-        if ($entity->isA('page') && $entity->chapter) {
+        if ($entity instanceof Page && $entity->chapter) {
             $entities = $entity->chapter->getVisiblePages();
         }
 
         // Page in book or chapter
-        if (($entity->isA('page') && !$entity->chapter) || $entity->isA('chapter')) {
+        if (($entity instanceof Page && !$entity->chapter) || $entity instanceof Chapter) {
             $entities = $entity->book->getDirectChildren();
         }
 
         // Book
         // Gets just the books in a shelf if shelf is in context
-        if ($entity->isA('book')) {
+        if ($entity instanceof Book) {
             $contextShelf = (new ShelfContext())->getContextualShelfForBook($entity);
             if ($contextShelf) {
                 $entities = $contextShelf->visibleBooks()->get();
@@ -38,8 +40,8 @@ class SiblingFetcher
             }
         }
 
-        // Shelve
-        if ($entity->isA('bookshelf')) {
+        // Shelf
+        if ($entity instanceof Bookshelf) {
             $entities = Bookshelf::visible()->get();
         }