X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/3f83c548f8bf67d3c670083f255a21897ef803d9..refs/pull/3406/head:/app/Entities/BreadcrumbsViewComposer.php

diff --git a/app/Entities/BreadcrumbsViewComposer.php b/app/Entities/BreadcrumbsViewComposer.php
index 97ddbc2dc..797162dfb 100644
--- a/app/Entities/BreadcrumbsViewComposer.php
+++ b/app/Entities/BreadcrumbsViewComposer.php
@@ -1,30 +1,36 @@
-<?php namespace BookStack\Entities;
+<?php
 
+namespace BookStack\Entities;
+
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Tools\ShelfContext;
 use Illuminate\View\View;
 
 class BreadcrumbsViewComposer
 {
-
     protected $entityContextManager;
 
     /**
      * BreadcrumbsViewComposer constructor.
-     * @param EntityContextManager $entityContextManager
+     *
+     * @param ShelfContext $entityContextManager
      */
-    public function __construct(EntityContextManager $entityContextManager)
+    public function __construct(ShelfContext $entityContextManager)
     {
         $this->entityContextManager = $entityContextManager;
     }
 
     /**
      * Modify data when the view is composed.
+     *
      * @param View $view
      */
     public function compose(View $view)
     {
         $crumbs = $view->getData()['crumbs'];
-        if (array_first($crumbs) instanceof Book) {
-            $shelf = $this->entityContextManager->getContextualShelfForBook(array_first($crumbs));
+        $firstCrumb = $crumbs[0] ?? null;
+        if ($firstCrumb instanceof Book) {
+            $shelf = $this->entityContextManager->getContextualShelfForBook($firstCrumb);
             if ($shelf) {
                 array_unshift($crumbs, $shelf);
                 $view->with('crumbs', $crumbs);