Merge branch 'sort_changes'

Related to #3134

app/Entities/Repos/ChapterRepo.php

@@ -10,6 +10,7 @@ use BookStack\Entities\Tools\BookContents;
 use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
+use BookStack\Exceptions\PermissionsException;
 use BookStack\Facades\Activity;
 use Exception;
 
@@ -85,15 +86,19 @@ class ChapterRepo
      * 'book:<id>' (book:5).
      *
      * @throws MoveOperationException
+     * @throws PermissionsException
      */
     public function move(Chapter $chapter, string $parentIdentifier): Book
     {
-        /** @var Book $parent */
         $parent = $this->findParentByIdentifier($parentIdentifier);
         if (is_null($parent)) {
             throw new MoveOperationException('Book to move chapter into not found');
         }
 
+        if (!userCan('chapter-create', $parent)) {
+            throw new PermissionsException('User does not have permission to create a chapter within the chosen book');
+        }
+
         $chapter->changeBook($parent->id);
         $chapter->rebuildPermissions();
         Activity::add(ActivityType::CHAPTER_MOVE, $chapter);

app/Entities/Repos/PageRepo.php

@@ -328,7 +328,7 @@ class PageRepo
     public function move(Page $page, string $parentIdentifier): Entity
     {
         $parent = $this->findParentByIdentifier($parentIdentifier);
-        if ($parent === null) {
+        if (is_null($parent)) {
             throw new MoveOperationException('Book or chapter to move page into not found');
         }
 

app/Entities/Tools/BookContents.php

@@ -7,7 +7,6 @@ use BookStack\Entities\Models\BookChild;
 use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Models\Entity;
 use BookStack\Entities\Models\Page;
-use BookStack\Exceptions\SortOperationException;
 use Illuminate\Support\Collection;
 
 class BookContents
@@ -107,111 +106,207 @@ class BookContents
     }
 
     /**
-     * Sort the books content using the given map.
-     * The map is a single-dimension collection of objects in the following format:
-     *   {
-     *     +"id": "294" (ID of item)
-     *     +"sort": 1 (Sort order index)
-     *     +"parentChapter": false (ID of parent chapter, as string, or false)
-     *     +"type": "page" (Entity type of item)
-     *     +"book": "1" (Id of book to place item in)
-     *   }.
-     *
+     * Sort the books content using the given sort map.
      * Returns a list of books that were involved in the operation.
      *
-     * @throws SortOperationException
+     * @returns Book[]
      */
-    public function sortUsingMap(Collection $sortMap): Collection
+    public function sortUsingMap(BookSortMap $sortMap): array
     {
         // Load models into map
-        $this->loadModelsIntoSortMap($sortMap);
-        $booksInvolved = $this->getBooksInvolvedInSort($sortMap);
+        $modelMap = $this->loadModelsFromSortMap($sortMap);
+
+        // Sort our changes from our map to be chapters first
+        // Since they need to be process to ensure book alignment for child page changes.
+        $sortMapItems = $sortMap->all();
+        usort($sortMapItems, function(BookSortMapItem $itemA, BookSortMapItem $itemB) {
+            $aScore = $itemA->type === 'page' ? 2 : 1;
+            $bScore = $itemB->type === 'page' ? 2 : 1;
+            return $aScore - $bScore;
+        });
 
         // Perform the sort
-        $sortMap->each(function ($mapItem) {
-            $this->applySortUpdates($mapItem);
-        });
+        foreach ($sortMapItems as $item) {
+            $this->applySortUpdates($item, $modelMap);
+        }
 
-        // Update permissions and activity.
-        $booksInvolved->each(function (Book $book) {
+        /** @var Book[] $booksInvolved */
+        $booksInvolved = array_values(array_filter($modelMap, function (string $key) {
+            return strpos($key, 'book:') === 0;
+        }, ARRAY_FILTER_USE_KEY));
+
+        // Update permissions of books involved
+        foreach ($booksInvolved as $book) {
             $book->rebuildPermissions();
-        });
+        }
 
         return $booksInvolved;
     }
 
     /**
      * Using the given sort map item, detect changes for the related model
-     * and update it if required.
+     * and update it if required. Changes where permissions are lacking will
+     * be skipped and not throw an error.
+     *
+     * @param array<string, Entity> $modelMap
      */
-    protected function applySortUpdates(\stdClass $sortMapItem)
+    protected function applySortUpdates(BookSortMapItem $sortMapItem, array $modelMap): void
     {
         /** @var BookChild $model */
-        $model = $sortMapItem->model;
+        $model = $modelMap[$sortMapItem->type . ':' . $sortMapItem->id] ?? null;
+        if (!$model) {
+            return;
+        }
 
-        $priorityChanged = intval($model->priority) !== intval($sortMapItem->sort);
-        $bookChanged = intval($model->book_id) !== intval($sortMapItem->book);
-        $chapterChanged = ($model instanceof Page) && intval($model->chapter_id) !== $sortMapItem->parentChapter;
+        $priorityChanged = $model->priority !== $sortMapItem->sort;
+        $bookChanged = $model->book_id !== $sortMapItem->parentBookId;
+        $chapterChanged = ($model instanceof Page) && $model->chapter_id !== $sortMapItem->parentChapterId;
 
+        // Stop if there's no change
+        if (!$priorityChanged && !$bookChanged && !$chapterChanged) {
+            return;
+        }
+
+        $currentParentKey =  'book:' . $model->book_id;
+        if ($model instanceof Page && $model->chapter_id) {
+             $currentParentKey = 'chapter:' . $model->chapter_id;
+        }
+
+        $currentParent = $modelMap[$currentParentKey] ?? null;
+        /** @var Book $newBook */
+        $newBook = $modelMap['book:' . $sortMapItem->parentBookId] ?? null;
+        /** @var ?Chapter $newChapter */
+        $newChapter = $sortMapItem->parentChapterId ? ($modelMap['chapter:' . $sortMapItem->parentChapterId] ?? null) : null;
+
+        if (!$this->isSortChangePermissible($sortMapItem, $model, $currentParent, $newBook, $newChapter)) {
+            return;
+        }
+
+        // Action the required changes
         if ($bookChanged) {
-            $model->changeBook($sortMapItem->book);
+            $model->changeBook($newBook->id);
         }
 
         if ($chapterChanged) {
-            $model->chapter_id = intval($sortMapItem->parentChapter);
-            $model->save();
+            $model->chapter_id = $newChapter->id ?? 0;
         }
 
         if ($priorityChanged) {
-            $model->priority = intval($sortMapItem->sort);
+            $model->priority = $sortMapItem->sort;
+        }
+
+        if ($chapterChanged || $priorityChanged) {
             $model->save();
         }
     }
 
+    /**
+     * Check if the current user has permissions to apply the given sorting change.
+     * Is quite complex since items can gain a different parent change. Acts as a:
+     * - Update of old parent element (Change of content/order).
+     * - Update of sorted/moved element.
+     * - Deletion of element (Relative to parent upon move).
+     * - Creation of element within parent (Upon move to new parent).
+     */
+    protected function isSortChangePermissible(BookSortMapItem $sortMapItem, BookChild $model, ?Entity $currentParent, ?Entity $newBook, ?Entity $newChapter): bool
+    {
+        // Stop if we can't see the current parent or new book.
+        if (!$currentParent || !$newBook) {
+            return false;
+        }
+
+        $hasNewParent = $newBook->id !== $model->book_id || ($model instanceof Page && $model->chapter_id !== ($sortMapItem->parentChapterId ?? 0));
+        if ($model instanceof Chapter) {
+            $hasPermission = userCan('book-update', $currentParent)
+                && userCan('book-update', $newBook)
+                && userCan('chapter-update', $model)
+                && (!$hasNewParent || userCan('chapter-create', $newBook))
+                && (!$hasNewParent || userCan('chapter-delete', $model));
+
+            if (!$hasPermission) {
+                return false;
+            }
+        }
+
+        if ($model instanceof Page) {
+            $parentPermission = ($currentParent instanceof Chapter) ? 'chapter-update' : 'book-update';
+            $hasCurrentParentPermission = userCan($parentPermission, $currentParent);
+
+            // This needs to check if there was an intended chapter location in the original sort map
+            // rather than inferring from the $newChapter since that variable may be null
+            // due to other reasons (Visibility).
+            $newParent = $sortMapItem->parentChapterId ? $newChapter : $newBook;
+            if (!$newParent) {
+                return false;
+            }
+
+            $hasPageEditPermission = userCan('page-update', $model);
+            $newParentInRightLocation = ($newParent instanceof Book || $newParent->book_id === $newBook->id);
+            $newParentPermission = ($newParent instanceof Chapter) ? 'chapter-update' : 'book-update';
+            $hasNewParentPermission = userCan($newParentPermission, $newParent);
+
+            $hasDeletePermissionIfMoving = (!$hasNewParent || userCan('page-delete', $model));
+            $hasCreatePermissionIfMoving = (!$hasNewParent || userCan('page-create', $newParent));
+
+            $hasPermission = $hasCurrentParentPermission
+                && $newParentInRightLocation
+                && $hasNewParentPermission
+                && $hasPageEditPermission
+                && $hasDeletePermissionIfMoving
+                && $hasCreatePermissionIfMoving;
+
+            if (!$hasPermission) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * Load models from the database into the given sort map.
+     * @return array<string, Entity>
      */
-    protected function loadModelsIntoSortMap(Collection $sortMap): void
+    protected function loadModelsFromSortMap(BookSortMap $sortMap): array
     {
-        $keyMap = $sortMap->keyBy(function (\stdClass $sortMapItem) {
-            return  $sortMapItem->type . ':' . $sortMapItem->id;
-        });
-        $pageIds = $sortMap->where('type', '=', 'page')->pluck('id');
-        $chapterIds = $sortMap->where('type', '=', 'chapter')->pluck('id');
+        $modelMap = [];
+        $ids = [
+            'chapter' => [],
+            'page' => [],
+            'book' => [],
+        ];
 
-        $pages = Page::visible()->whereIn('id', $pageIds)->get();
-        $chapters = Chapter::visible()->whereIn('id', $chapterIds)->get();
+        foreach ($sortMap->all() as $sortMapItem) {
+            $ids[$sortMapItem->type][] = $sortMapItem->id;
+            $ids['book'][] = $sortMapItem->parentBookId;
+            if ($sortMapItem->parentChapterId) {
+                $ids['chapter'][] = $sortMapItem->parentChapterId;
+            }
+        }
 
+        $pages = Page::visible()->whereIn('id', array_unique($ids['page']))->get(Page::$listAttributes);
+        /** @var Page $page */
         foreach ($pages as $page) {
-            $sortItem = $keyMap->get('page:' . $page->id);
-            $sortItem->model = $page;
+            $modelMap['page:' . $page->id] = $page;
+            $ids['book'][] = $page->book_id;
+            if ($page->chapter_id) {
+                $ids['chapter'][] = $page->chapter_id;
+            }
         }
 
+        $chapters = Chapter::visible()->whereIn('id', array_unique($ids['chapter']))->get();
+        /** @var Chapter $chapter */
         foreach ($chapters as $chapter) {
-            $sortItem = $keyMap->get('chapter:' . $chapter->id);
-            $sortItem->model = $chapter;
-        }
-    }
-
-    /**
-     * Get the books involved in a sort.
-     * The given sort map should have its models loaded first.
-     *
-     * @throws SortOperationException
-     */
-    protected function getBooksInvolvedInSort(Collection $sortMap): Collection
-    {
-        $bookIdsInvolved = collect([$this->book->id]);
-        $bookIdsInvolved = $bookIdsInvolved->concat($sortMap->pluck('book'));
-        $bookIdsInvolved = $bookIdsInvolved->concat($sortMap->pluck('model.book_id'));
-        $bookIdsInvolved = $bookIdsInvolved->unique()->toArray();
-
-        $books = Book::hasPermission('update')->whereIn('id', $bookIdsInvolved)->get();
-
-        if (count($books) !== count($bookIdsInvolved)) {
-            throw new SortOperationException('Could not find all books requested in sort operation');
+            $modelMap['chapter:' . $chapter->id] = $chapter;
+            $ids['book'][] = $chapter->book_id;
         }
 
-        return $books;
+        $books = Book::visible()->whereIn('id', array_unique($ids['book']))->get();
+        /** @var Book $book */
+        foreach ($books as $book) {
+            $modelMap['book:' . $book->id] = $book;
+        }
+
+        return $modelMap;
     }
 }

app/Entities/Tools/BookSortMap.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+class BookSortMap
+{
+    /**
+     * @var BookSortMapItem[]
+     */
+    protected $mapData = [];
+
+    public function addItem(BookSortMapItem $mapItem): void
+    {
+        $this->mapData[] = $mapItem;
+    }
+
+    /**
+     * @return BookSortMapItem[]
+     */
+    public function all(): array
+    {
+        return $this->mapData;
+    }
+
+    public static function fromJson(string $json): self
+    {
+        $map = new static();
+        $mapData = json_decode($json);
+
+        foreach ($mapData as $mapDataItem) {
+            $item = new BookSortMapItem(
+                intval($mapDataItem->id),
+                intval($mapDataItem->sort),
+                $mapDataItem->parentChapter ? intval($mapDataItem->parentChapter) : null,
+                $mapDataItem->type,
+                intval($mapDataItem->book)
+            );
+
+            $map->addItem($item);
+        }
+
+        return $map;
+    }
+
+}

app/Entities/Tools/BookSortMapItem.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+class BookSortMapItem
+{
+
+    /**
+     * @var int
+     */
+    public $id;
+
+    /**
+     * @var int
+     */
+    public $sort;
+
+    /**
+     * @var ?int
+     */
+    public $parentChapterId;
+
+    /**
+     * @var string
+     */
+    public $type;
+
+    /**
+     * @var int
+     */
+    public $parentBookId;
+
+
+    public function __construct(int $id, int $sort, ?int $parentChapterId, string $type, int $parentBookId)
+    {
+        $this->id = $id;
+        $this->sort = $sort;
+        $this->parentChapterId = $parentChapterId;
+        $this->type = $type;
+        $this->parentBookId = $parentBookId;
+    }
+
+
+}

app/Exceptions/SortOperationException.php

@@ -1,9 +0,0 @@
-<?php
-
-namespace BookStack\Exceptions;
-
-use Exception;
-
-class SortOperationException extends Exception
-{
-}

app/Http/Controllers/BookSortController.php

@@ -3,10 +3,9 @@
 namespace BookStack\Http\Controllers;
 
 use BookStack\Actions\ActivityType;
-use BookStack\Entities\Models\Book;
 use BookStack\Entities\Repos\BookRepo;
 use BookStack\Entities\Tools\BookContents;
-use BookStack\Exceptions\SortOperationException;
+use BookStack\Entities\Tools\BookSortMap;
 use BookStack\Facades\Activity;
 use Illuminate\Http\Request;
 
@@ -59,20 +58,14 @@ class BookSortController extends Controller
             return redirect($book->getUrl());
         }
 
-        $sortMap = collect(json_decode($request->get('sort-tree')));
+        $sortMap = BookSortMap::fromJson($request->get('sort-tree'));
         $bookContents = new BookContents($book);
-        $booksInvolved = collect();
-
-        try {
-            $booksInvolved = $bookContents->sortUsingMap($sortMap);
-        } catch (SortOperationException $exception) {
-            $this->showPermissionError();
-        }
+        $booksInvolved = $bookContents->sortUsingMap($sortMap);
 
         // Rebuild permissions and add activity for involved books.
-        $booksInvolved->each(function (Book $book) {
-            Activity::add(ActivityType::BOOK_SORT, $book);
-        });
+        foreach ($booksInvolved as $bookInvolved) {
+            Activity::add(ActivityType::BOOK_SORT, $bookInvolved);
+        }
 
         return redirect($book->getUrl());
     }

app/Http/Controllers/ChapterController.php

@@ -11,6 +11,7 @@ use BookStack\Entities\Tools\NextPreviousContentLocator;
 use BookStack\Entities\Tools\PermissionsUpdater;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
+use BookStack\Exceptions\PermissionsException;
 use Illuminate\Http\Request;
 use Illuminate\Validation\ValidationException;
 use Throwable;
@@ -180,6 +181,8 @@ class ChapterController extends Controller
 
         try {
             $newBook = $this->chapterRepo->move($chapter, $entitySelection);
+        } catch (PermissionsException $exception) {
+            $this->showPermissionError();
         } catch (MoveOperationException $exception) {
             $this->showErrorNotification(trans('errors.selected_book_not_found'));
 

app/Http/Controllers/PageController.php

@@ -412,11 +412,9 @@ class PageController extends Controller
 
         try {
             $parent = $this->pageRepo->move($page, $entitySelection);
+        } catch (PermissionsException $exception) {
+            $this->showPermissionError();
         } catch (Exception $exception) {
-            if ($exception instanceof PermissionsException) {
-                $this->showPermissionError();
-            }
-
             $this->showErrorNotification(trans('errors.selected_book_chapter_not_found'));
 
             return redirect()->back();

tests/Entity/SortTest.php

@@ -33,9 +33,9 @@ class SortTest extends TestCase
 
     public function test_page_move_into_book()
     {
-        $page = Page::first();
+        $page = Page::query()->first();
         $currentBook = $page->book;
-        $newBook = Book::where('id', '!=', $currentBook->id)->first();
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
 
         $resp = $this->asEditor()->get($page->getUrl('/move'));
         $resp->assertSee('Move Page');
@@ -43,7 +43,7 @@ class SortTest extends TestCase
         $movePageResp = $this->put($page->getUrl('/move'), [
             'entity_selection' => 'book:' . $newBook->id,
         ]);
-        $page = Page::find($page->id);
+        $page = Page::query()->find($page->id);
 
         $movePageResp->assertRedirect($page->getUrl());
         $this->assertTrue($page->book->id == $newBook->id, 'Page book is now the new book');
@@ -55,15 +55,15 @@ class SortTest extends TestCase
 
     public function test_page_move_into_chapter()
     {
-        $page = Page::first();
+        $page = Page::query()->first();
         $currentBook = $page->book;
-        $newBook = Book::where('id', '!=', $currentBook->id)->first();
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
         $newChapter = $newBook->chapters()->first();
 
         $movePageResp = $this->actingAs($this->getEditor())->put($page->getUrl('/move'), [
             'entity_selection' => 'chapter:' . $newChapter->id,
         ]);
-        $page = Page::find($page->id);
+        $page = Page::query()->find($page->id);
 
         $movePageResp->assertRedirect($page->getUrl());
         $this->assertTrue($page->book->id == $newBook->id, 'Page parent is now the new chapter');
@@ -74,9 +74,9 @@ class SortTest extends TestCase
 
     public function test_page_move_from_chapter_to_book()
     {
-        $oldChapter = Chapter::first();
+        $oldChapter = Chapter::query()->first();
         $page = $oldChapter->pages()->first();
-        $newBook = Book::where('id', '!=', $oldChapter->book_id)->first();
+        $newBook = Book::query()->where('id', '!=', $oldChapter->book_id)->first();
 
         $movePageResp = $this->actingAs($this->getEditor())->put($page->getUrl('/move'), [
             'entity_selection' => 'book:' . $newBook->id,
@@ -110,7 +110,7 @@ class SortTest extends TestCase
             'entity_selection' => 'book:' . $newBook->id,
         ]);
 
-        $page = Page::find($page->id);
+        $page = Page::query()->find($page->id);
         $movePageResp->assertRedirect($page->getUrl());
 
         $this->assertTrue($page->book->id == $newBook->id, 'Page book is now the new book');
@@ -118,9 +118,9 @@ class SortTest extends TestCase
 
     public function test_page_move_requires_delete_permissions()
     {
-        $page = Page::first();
+        $page = Page::query()->first();
         $currentBook = $page->book;
-        $newBook = Book::where('id', '!=', $currentBook->id)->first();
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
         $editor = $this->getEditor();
 
         $this->setEntityRestrictions($newBook, ['view', 'update', 'create', 'delete'], $editor->roles->all());
@@ -138,17 +138,17 @@ class SortTest extends TestCase
             'entity_selection' => 'book:' . $newBook->id,
         ]);
 
-        $page = Page::find($page->id);
+        $page = Page::query()->find($page->id);
         $movePageResp->assertRedirect($page->getUrl());
         $this->assertTrue($page->book->id == $newBook->id, 'Page book is now the new book');
     }
 
     public function test_chapter_move()
     {
-        $chapter = Chapter::first();
+        $chapter = Chapter::query()->first();
         $currentBook = $chapter->book;
         $pageToCheck = $chapter->pages->first();
-        $newBook = Book::where('id', '!=', $currentBook->id)->first();
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
 
         $chapterMoveResp = $this->asEditor()->get($chapter->getUrl('/move'));
         $chapterMoveResp->assertSee('Move Chapter');
@@ -157,7 +157,7 @@ class SortTest extends TestCase
             'entity_selection' => 'book:' . $newBook->id,
         ]);
 
-        $chapter = Chapter::find($chapter->id);
+        $chapter = Chapter::query()->find($chapter->id);
         $moveChapterResp->assertRedirect($chapter->getUrl());
         $this->assertTrue($chapter->book->id === $newBook->id, 'Chapter Book is now the new book');
 
@@ -165,7 +165,7 @@ class SortTest extends TestCase
         $newBookResp->assertSee('moved chapter');
         $newBookResp->assertSee($chapter->name);
 
-        $pageToCheck = Page::find($pageToCheck->id);
+        $pageToCheck = Page::query()->find($pageToCheck->id);
         $this->assertTrue($pageToCheck->book_id === $newBook->id, 'Chapter child page\'s book id has changed to the new book');
         $pageCheckResp = $this->get($pageToCheck->getUrl());
         $pageCheckResp->assertSee($newBook->name);
@@ -173,9 +173,9 @@ class SortTest extends TestCase
 
     public function test_chapter_move_requires_delete_permissions()
     {
-        $chapter = Chapter::first();
+        $chapter = Chapter::query()->first();
         $currentBook = $chapter->book;
-        $newBook = Book::where('id', '!=', $currentBook->id)->first();
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
         $editor = $this->getEditor();
 
         $this->setEntityRestrictions($newBook, ['view', 'update', 'create', 'delete'], $editor->roles->all());
@@ -193,7 +193,32 @@ class SortTest extends TestCase
             'entity_selection' => 'book:' . $newBook->id,
         ]);
 
-        $chapter = Chapter::find($chapter->id);
+        $chapter = Chapter::query()->find($chapter->id);
+        $moveChapterResp->assertRedirect($chapter->getUrl());
+        $this->assertTrue($chapter->book->id == $newBook->id, 'Page book is now the new book');
+    }
+
+    public function test_chapter_move_requires_create_permissions_in_new_book()
+    {
+        $chapter = Chapter::query()->first();
+        $currentBook = $chapter->book;
+        $newBook = Book::query()->where('id', '!=', $currentBook->id)->first();
+        $editor = $this->getEditor();
+
+        $this->setEntityRestrictions($newBook, ['view', 'update', 'delete'], [$editor->roles->first()]);
+        $this->setEntityRestrictions($chapter, ['view', 'update', 'create', 'delete'], [$editor->roles->first()]);
+
+        $moveChapterResp = $this->actingAs($editor)->put($chapter->getUrl('/move'), [
+            'entity_selection' => 'book:' . $newBook->id,
+        ]);
+        $this->assertPermissionError($moveChapterResp);
+
+        $this->setEntityRestrictions($newBook, ['view', 'update', 'create', 'delete'], [$editor->roles->first()]);
+        $moveChapterResp = $this->put($chapter->getUrl('/move'), [
+            'entity_selection' => 'book:' . $newBook->id,
+        ]);
+
+        $chapter = Chapter::query()->find($chapter->id);
         $moveChapterResp->assertRedirect($chapter->getUrl());
         $this->assertTrue($chapter->book->id == $newBook->id, 'Page book is now the new book');
     }
@@ -239,20 +264,20 @@ class SortTest extends TestCase
         // Create request data
         $reqData = [
             [
-                'id'            => $chapterToMove->id,
-                'sort'          => 0,
+                'id' => $chapterToMove->id,
+                'sort' => 0,
                 'parentChapter' => false,
-                'type'          => 'chapter',
-                'book'          => $newBook->id,
+                'type' => 'chapter',
+                'book' => $newBook->id,
             ],
         ];
         foreach ($pagesToMove as $index => $page) {
             $reqData[] = [
-                'id'            => $page->id,
-                'sort'          => $index,
+                'id' => $page->id,
+                'sort' => $index,
                 'parentChapter' => $index === count($pagesToMove) - 1 ? $chapterToMove->id : false,
-                'type'          => 'page',
-                'book'          => $newBook->id,
+                'type' => 'page',
+                'book' => $newBook->id,
             ];
         }
 
@@ -260,18 +285,153 @@ class SortTest extends TestCase
         $sortResp->assertRedirect($newBook->getUrl());
         $sortResp->assertStatus(302);
         $this->assertDatabaseHas('chapters', [
-            'id'       => $chapterToMove->id,
-            'book_id'  => $newBook->id,
+            'id' => $chapterToMove->id,
+            'book_id' => $newBook->id,
             'priority' => 0,
         ]);
         $this->assertTrue($newBook->chapters()->count() === 1);
         $this->assertTrue($newBook->chapters()->first()->pages()->count() === 1);
 
         $checkPage = $pagesToMove[1];
-        $checkResp = $this->get(Page::find($checkPage->id)->getUrl());
+        $checkResp = $this->get($checkPage->refresh()->getUrl());
         $checkResp->assertSee($newBook->name);
     }
 
+    public function test_book_sort_makes_no_changes_if_new_chapter_does_not_align_with_new_book()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $page->book_id,
+        ];
+        $this->asEditor()->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+    public function test_book_sort_makes_no_changes_if_no_view_permissions_on_new_chapter()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        /** @var Chapter $otherChapter */
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+        $this->setEntityRestrictions($otherChapter);
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $otherChapter->book_id,
+        ];
+        $this->asEditor()->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+    public function test_book_sort_makes_no_changes_if_no_view_permissions_on_new_book()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        /** @var Chapter $otherChapter */
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+        $editor = $this->getEditor();
+        $this->setEntityRestrictions($otherChapter->book, ['update', 'delete'], [$editor->roles()->first()]);
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $otherChapter->book_id,
+        ];
+        $this->actingAs($editor)->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+    public function test_book_sort_makes_no_changes_if_no_update_or_create_permissions_on_new_chapter()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        /** @var Chapter $otherChapter */
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+        $editor = $this->getEditor();
+        $this->setEntityRestrictions($otherChapter, ['view', 'delete'], [$editor->roles()->first()]);
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $otherChapter->book_id,
+        ];
+        $this->actingAs($editor)->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+    public function test_book_sort_makes_no_changes_if_no_update_permissions_on_moved_item()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        /** @var Chapter $otherChapter */
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+        $editor = $this->getEditor();
+        $this->setEntityRestrictions($page, ['view', 'delete'], [$editor->roles()->first()]);
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $otherChapter->book_id,
+        ];
+        $this->actingAs($editor)->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+    public function test_book_sort_makes_no_changes_if_no_delete_permissions_on_moved_item()
+    {
+        /** @var Page $page */
+        $page = Page::query()->where('chapter_id', '!=', 0)->first();
+        /** @var Chapter $otherChapter */
+        $otherChapter = Chapter::query()->where('book_id', '!=', $page->book_id)->first();
+        $editor = $this->getEditor();
+        $this->setEntityRestrictions($page, ['view', 'update'], [$editor->roles()->first()]);
+
+        $sortData = [
+            'id' => $page->id,
+            'sort' => 0,
+            'parentChapter' => $otherChapter->id,
+            'type' => 'page',
+            'book' => $otherChapter->book_id,
+        ];
+        $this->actingAs($editor)->put($page->book->getUrl('/sort'), ['sort-tree' => json_encode([$sortData])])->assertRedirect();
+
+        $this->assertDatabaseHas('pages', [
+            'id' => $page->id, 'chapter_id' => $page->chapter_id, 'book_id' => $page->book_id,
+        ]);
+    }
+
+
     public function test_book_sort_item_returns_book_content()
     {
         $books = Book::all();

tests/Permissions/EntityPermissionsTest.php

@@ -670,51 +670,6 @@ class EntityPermissionsTest extends TestCase
         $this->actingAs($this->user)->get($firstBook->getUrl('/sort'));
     }
 
-    public function test_book_sort_permission()
-    {
-        /** @var Book $firstBook */
-        $firstBook = Book::query()->first();
-        /** @var Book $secondBook */
-        $secondBook = Book::query()->find(2);
-
-        $this->setRestrictionsForTestRoles($firstBook, ['view', 'update']);
-        $this->setRestrictionsForTestRoles($secondBook, ['view']);
-
-        $firstBookChapter = $this->newChapter(['name' => 'first book chapter'], $firstBook);
-        $secondBookChapter = $this->newChapter(['name' => 'second book chapter'], $secondBook);
-
-        // Create request data
-        $reqData = [
-            [
-                'id'            => $firstBookChapter->id,
-                'sort'          => 0,
-                'parentChapter' => false,
-                'type'          => 'chapter',
-                'book'          => $secondBook->id,
-            ],
-        ];
-
-        // Move chapter from first book to a second book
-        $this->actingAs($this->user)->put($firstBook->getUrl() . '/sort', ['sort-tree' => json_encode($reqData)])
-            ->assertRedirect('/');
-        $this->get('/')->assertSee('You do not have permission');
-
-        $reqData = [
-            [
-                'id'            => $secondBookChapter->id,
-                'sort'          => 0,
-                'parentChapter' => false,
-                'type'          => 'chapter',
-                'book'          => $firstBook->id,
-            ],
-        ];
-
-        // Move chapter from second book to first book
-        $this->actingAs($this->user)->put($firstBook->getUrl() . '/sort', ['sort-tree' => json_encode($reqData)])
-                ->assertRedirect('/');
-        $this->get('/')->assertSee('You do not have permission');
-    }
-
     public function test_can_create_page_if_chapter_has_permissions_when_book_not_visible()
     {
         /** @var Book $book */