BookStack Code Mirror - bookstack/blob - app/Entities/BreadcrumbsViewComposer.php

   1 <?php namespace BookStack\Entities;
   2
   3 use BookStack\Entities\Models\Book;
   4 use BookStack\Entities\Tools\ShelfContext;
   5 use Illuminate\View\View;
   6
   7 class BreadcrumbsViewComposer
   8 {
   9
  10     protected $entityContextManager;
  11
  12     /**
  13      * BreadcrumbsViewComposer constructor.
  14      * @param ShelfContext $entityContextManager
  15      */
  16     public function __construct(ShelfContext $entityContextManager)
  17     {
  18         $this->entityContextManager = $entityContextManager;
  19     }
  20
  21     /**
  22      * Modify data when the view is composed.
  23      * @param View $view
  24      */
  25     public function compose(View $view)
  26     {
  27         $crumbs = $view->getData()['crumbs'];
  28         $firstCrumb = $crumbs[0] ?? null;
  29         if ($firstCrumb instanceof Book) {
  30             $shelf = $this->entityContextManager->getContextualShelfForBook($firstCrumb);
  31             if ($shelf) {
  32                 array_unshift($crumbs, $shelf);
  33                 $view->with('crumbs', $crumbs);
  34             }
  35         }
  36     }
  37 }