BookStack Code Mirror - bookstack/blob - app/Http/Controllers/PageController.php

   1 <?php namespace BookStack\Http\Controllers;
   2
   3 use Activity;
   4 use BookStack\Exceptions\NotFoundException;
   5 use BookStack\Exceptions\BadRequestException;
   6 use BookStack\Repos\EntityRepo;
   7 use BookStack\Repos\UserRepo;
   8 use BookStack\Services\ExportService;
   9 use Illuminate\Http\Request;
  10 use Illuminate\Http\Response;
  11 use Views;
  12 use GatherContent\Htmldiff\Htmldiff;
  13
  14 class PageController extends Controller
  15 {
  16
  17     protected $entityRepo;
  18     protected $exportService;
  19     protected $userRepo;
  20
  21     /**
  22      * PageController constructor.
  23      * @param EntityRepo $entityRepo
  24      * @param ExportService $exportService
  25      * @param UserRepo $userRepo
  26      */
  27     public function __construct(EntityRepo $entityRepo, ExportService $exportService, UserRepo $userRepo)
  28     {
  29         $this->entityRepo = $entityRepo;
  30         $this->exportService = $exportService;
  31         $this->userRepo = $userRepo;
  32         parent::__construct();
  33     }
  34
  35     /**
  36      * Show the form for creating a new page.
  37      * @param string $bookSlug
  38      * @param string $chapterSlug
  39      * @return Response
  40      * @internal param bool $pageSlug
  41      * @throws NotFoundException
  42      */
  43     public function create($bookSlug, $chapterSlug = null)
  44     {
  45         if ($chapterSlug !== null) {
  46             $chapter = $this->entityRepo->getBySlug('chapter', $chapterSlug, $bookSlug);
  47             $book = $chapter->book;
  48         } else {
  49             $chapter = null;
  50             $book = $this->entityRepo->getBySlug('book', $bookSlug);
  51         }
  52
  53         $parent = $chapter ? $chapter : $book;
  54         $this->checkOwnablePermission('page-create', $parent);
  55
  56         // Redirect to draft edit screen if signed in
  57         if ($this->signedIn) {
  58             $draft = $this->entityRepo->getDraftPage($book, $chapter);
  59             return redirect($draft->getUrl());
  60         }
  61
  62         // Otherwise show the edit view if they're a guest
  63         $this->setPageTitle(trans('entities.pages_new'));
  64         return view('pages/guest-create', ['parent' => $parent]);
  65     }
  66
  67     /**
  68      * Create a new page as a guest user.
  69      * @param Request $request
  70      * @param string $bookSlug
  71      * @param string|null $chapterSlug
  72      * @return mixed
  73      * @throws NotFoundException
  74      */
  75     public function createAsGuest(Request $request, $bookSlug, $chapterSlug = null)
  76     {
  77         $this->validate($request, [
  78             'name' => 'required|string|max:255'
  79         ]);
  80
  81         if ($chapterSlug !== null) {
  82             $chapter = $this->entityRepo->getBySlug('chapter', $chapterSlug, $bookSlug);
  83             $book = $chapter->book;
  84         } else {
  85             $chapter = null;
  86             $book = $this->entityRepo->getBySlug('book', $bookSlug);
  87         }
  88
  89         $parent = $chapter ? $chapter : $book;
  90         $this->checkOwnablePermission('page-create', $parent);
  91
  92         $page = $this->entityRepo->getDraftPage($book, $chapter);
  93         $this->entityRepo->publishPageDraft($page, [
  94             'name' => $request->get('name'),
  95             'html' => ''
  96         ]);
  97         return redirect($page->getUrl('/edit'));
  98     }
  99
 100     /**
 101      * Show form to continue editing a draft page.
 102      * @param string $bookSlug
 103      * @param int $pageId
 104      * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 105      */
 106     public function editDraft($bookSlug, $pageId)
 107     {
 108         $draft = $this->entityRepo->getById('page', $pageId, true);
 109         $this->checkOwnablePermission('page-create', $draft->parent);
 110         $this->setPageTitle(trans('entities.pages_edit_draft'));
 111
 112         $draftsEnabled = $this->signedIn;
 113         return view('pages/edit', [
 114             'page' => $draft,
 115             'book' => $draft->book,
 116             'isDraft' => true,
 117             'draftsEnabled' => $draftsEnabled
 118         ]);
 119     }
 120
 121     /**
 122      * Store a new page by changing a draft into a page.
 123      * @param  Request $request
 124      * @param  string $bookSlug
 125      * @param  int $pageId
 126      * @return Response
 127      */
 128     public function store(Request $request, $bookSlug, $pageId)
 129     {
 130         $this->validate($request, [
 131             'name' => 'required|string|max:255'
 132         ]);
 133
 134         $input = $request->all();
 135         $draftPage = $this->entityRepo->getById('page', $pageId, true);
 136         $book = $draftPage->book;
 137
 138         $parent = $draftPage->parent;
 139         $this->checkOwnablePermission('page-create', $parent);
 140
 141         if ($parent->isA('chapter')) {
 142             $input['priority'] = $this->entityRepo->getNewChapterPriority($parent);
 143         } else {
 144             $input['priority'] = $this->entityRepo->getNewBookPriority($parent);
 145         }
 146
 147         $page = $this->entityRepo->publishPageDraft($draftPage, $input);
 148
 149         Activity::add($page, 'page_create', $book->id);
 150         return redirect($page->getUrl());
 151     }
 152
 153     /**
 154      * Display the specified page.
 155      * If the page is not found via the slug the revisions are searched for a match.
 156      * @param string $bookSlug
 157      * @param string $pageSlug
 158      * @return Response
 159      * @throws NotFoundException
 160      */
 161     public function show($bookSlug, $pageSlug)
 162     {
 163         try {
 164             $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 165         } catch (NotFoundException $e) {
 166             $page = $this->entityRepo->getPageByOldSlug($pageSlug, $bookSlug);
 167             if ($page === null) {
 168                 throw $e;
 169             }
 170             return redirect($page->getUrl());
 171         }
 172
 173         $this->checkOwnablePermission('page-view', $page);
 174
 175         $page->html = $this->entityRepo->renderPage($page);
 176         $sidebarTree = $this->entityRepo->getBookChildren($page->book);
 177         $pageNav = $this->entityRepo->getPageNav($page->html);
 178
 179         // check if the comment's are enabled
 180         $commentsEnabled = !setting('app-disable-comments');
 181         if ($commentsEnabled) {
 182             $page->load(['comments.createdBy']);
 183         }
 184
 185         Views::add($page);
 186         $this->setPageTitle($page->getShortName());
 187         return view('pages/show', [
 188             'page' => $page,'book' => $page->book,
 189             'current' => $page,
 190             'sidebarTree' => $sidebarTree,
 191             'commentsEnabled' => $commentsEnabled,
 192             'pageNav' => $pageNav
 193         ]);
 194     }
 195
 196     /**
 197      * Get page from an ajax request.
 198      * @param int $pageId
 199      * @return \Illuminate\Http\JsonResponse
 200      */
 201     public function getPageAjax($pageId)
 202     {
 203         $page = $this->entityRepo->getById('page', $pageId);
 204         return response()->json($page);
 205     }
 206
 207     /**
 208      * Show the form for editing the specified page.
 209      * @param string $bookSlug
 210      * @param string $pageSlug
 211      * @return Response
 212      */
 213     public function edit($bookSlug, $pageSlug)
 214     {
 215         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 216         $this->checkOwnablePermission('page-update', $page);
 217         $this->setPageTitle(trans('entities.pages_editing_named', ['pageName'=>$page->getShortName()]));
 218         $page->isDraft = false;
 219
 220         // Check for active editing
 221         $warnings = [];
 222         if ($this->entityRepo->isPageEditingActive($page, 60)) {
 223             $warnings[] = $this->entityRepo->getPageEditingActiveMessage($page, 60);
 224         }
 225
 226         // Check for a current draft version for this user
 227         if ($this->entityRepo->hasUserGotPageDraft($page, $this->currentUser->id)) {
 228             $draft = $this->entityRepo->getUserPageDraft($page, $this->currentUser->id);
 229             $page->name = $draft->name;
 230             $page->html = $draft->html;
 231             $page->markdown = $draft->markdown;
 232             $page->isDraft = true;
 233             $warnings [] = $this->entityRepo->getUserPageDraftMessage($draft);
 234         }
 235
 236         if (count($warnings) > 0) {
 237             session()->flash('warning', implode("\n", $warnings));
 238         }
 239
 240         $draftsEnabled = $this->signedIn;
 241         return view('pages/edit', [
 242             'page' => $page,
 243             'book' => $page->book,
 244             'current' => $page,
 245             'draftsEnabled' => $draftsEnabled
 246         ]);
 247     }
 248
 249     /**
 250      * Update the specified page in storage.
 251      * @param  Request $request
 252      * @param  string $bookSlug
 253      * @param  string $pageSlug
 254      * @return Response
 255      */
 256     public function update(Request $request, $bookSlug, $pageSlug)
 257     {
 258         $this->validate($request, [
 259             'name' => 'required|string|max:255'
 260         ]);
 261         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 262         $this->checkOwnablePermission('page-update', $page);
 263         $this->entityRepo->updatePage($page, $page->book->id, $request->all());
 264         Activity::add($page, 'page_update', $page->book->id);
 265         return redirect($page->getUrl());
 266     }
 267
 268     /**
 269      * Save a draft update as a revision.
 270      * @param Request $request
 271      * @param int $pageId
 272      * @return \Illuminate\Http\JsonResponse
 273      */
 274     public function saveDraft(Request $request, $pageId)
 275     {
 276         $page = $this->entityRepo->getById('page', $pageId, true);
 277         $this->checkOwnablePermission('page-update', $page);
 278
 279         if (!$this->signedIn) {
 280             return response()->json([
 281                 'status' => 'error',
 282                 'message' => trans('errors.guests_cannot_save_drafts'),
 283             ], 500);
 284         }
 285
 286         $draft = $this->entityRepo->updatePageDraft($page, $request->only(['name', 'html', 'markdown']));
 287
 288         $updateTime = $draft->updated_at->timestamp;
 289         return response()->json([
 290             'status'    => 'success',
 291             'message'   => trans('entities.pages_edit_draft_save_at'),
 292             'timestamp' => $updateTime
 293         ]);
 294     }
 295
 296     /**
 297      * Redirect from a special link url which
 298      * uses the page id rather than the name.
 299      * @param int $pageId
 300      * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
 301      */
 302     public function redirectFromLink($pageId)
 303     {
 304         $page = $this->entityRepo->getById('page', $pageId);
 305         return redirect($page->getUrl());
 306     }
 307
 308     /**
 309      * Show the deletion page for the specified page.
 310      * @param string $bookSlug
 311      * @param string $pageSlug
 312      * @return \Illuminate\View\View
 313      */
 314     public function showDelete($bookSlug, $pageSlug)
 315     {
 316         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 317         $this->checkOwnablePermission('page-delete', $page);
 318         $this->setPageTitle(trans('entities.pages_delete_named', ['pageName'=>$page->getShortName()]));
 319         return view('pages/delete', ['book' => $page->book, 'page' => $page, 'current' => $page]);
 320     }
 321
 322
 323     /**
 324      * Show the deletion page for the specified page.
 325      * @param string $bookSlug
 326      * @param int $pageId
 327      * @return \Illuminate\View\View
 328      * @throws NotFoundException
 329      */
 330     public function showDeleteDraft($bookSlug, $pageId)
 331     {
 332         $page = $this->entityRepo->getById('page', $pageId, true);
 333         $this->checkOwnablePermission('page-update', $page);
 334         $this->setPageTitle(trans('entities.pages_delete_draft_named', ['pageName'=>$page->getShortName()]));
 335         return view('pages/delete', ['book' => $page->book, 'page' => $page, 'current' => $page]);
 336     }
 337
 338     /**
 339      * Remove the specified page from storage.
 340      * @param string $bookSlug
 341      * @param string $pageSlug
 342      * @return Response
 343      * @internal param int $id
 344      */
 345     public function destroy($bookSlug, $pageSlug)
 346     {
 347         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 348         $book = $page->book;
 349         $this->checkOwnablePermission('page-delete', $page);
 350         $this->entityRepo->destroyPage($page);
 351
 352         Activity::addMessage('page_delete', $book->id, $page->name);
 353         session()->flash('success', trans('entities.pages_delete_success'));
 354         return redirect($book->getUrl());
 355     }
 356
 357     /**
 358      * Remove the specified draft page from storage.
 359      * @param string $bookSlug
 360      * @param int $pageId
 361      * @return Response
 362      * @throws NotFoundException
 363      */
 364     public function destroyDraft($bookSlug, $pageId)
 365     {
 366         $page = $this->entityRepo->getById('page', $pageId, true);
 367         $book = $page->book;
 368         $this->checkOwnablePermission('page-update', $page);
 369         session()->flash('success', trans('entities.pages_delete_draft_success'));
 370         $this->entityRepo->destroyPage($page);
 371         return redirect($book->getUrl());
 372     }
 373
 374     /**
 375      * Shows the last revisions for this page.
 376      * @param string $bookSlug
 377      * @param string $pageSlug
 378      * @return \Illuminate\View\View
 379      */
 380     public function showRevisions($bookSlug, $pageSlug)
 381     {
 382         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 383         $this->setPageTitle(trans('entities.pages_revisions_named', ['pageName'=>$page->getShortName()]));
 384         return view('pages/revisions', ['page' => $page, 'book' => $page->book, 'current' => $page]);
 385     }
 386
 387     /**
 388      * Shows a preview of a single revision
 389      * @param string $bookSlug
 390      * @param string $pageSlug
 391      * @param int $revisionId
 392      * @return \Illuminate\View\View
 393      */
 394     public function showRevision($bookSlug, $pageSlug, $revisionId)
 395     {
 396         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 397         $revision = $page->revisions()->where('id', '=', $revisionId)->first();
 398         if ($revision === null) {
 399             abort(404);
 400         }
 401
 402         $page->fill($revision->toArray());
 403         $this->setPageTitle(trans('entities.pages_revision_named', ['pageName' => $page->getShortName()]));
 404
 405         return view('pages/revision', [
 406             'page' => $page,
 407             'book' => $page->book,
 408             'revision' => $revision
 409         ]);
 410     }
 411
 412     /**
 413      * Shows the changes of a single revision
 414      * @param string $bookSlug
 415      * @param string $pageSlug
 416      * @param int $revisionId
 417      * @return \Illuminate\View\View
 418      */
 419     public function showRevisionChanges($bookSlug, $pageSlug, $revisionId)
 420     {
 421         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 422         $revision = $page->revisions()->where('id', '=', $revisionId)->first();
 423         if ($revision === null) {
 424             abort(404);
 425         }
 426
 427         $prev = $revision->getPrevious();
 428         $prevContent = ($prev === null) ? '' : $prev->html;
 429         $diff = (new Htmldiff)->diff($prevContent, $revision->html);
 430
 431         $page->fill($revision->toArray());
 432         $this->setPageTitle(trans('entities.pages_revision_named', ['pageName'=>$page->getShortName()]));
 433
 434         return view('pages/revision', [
 435             'page' => $page,
 436             'book' => $page->book,
 437             'diff' => $diff,
 438             'revision' => $revision
 439         ]);
 440     }
 441
 442     /**
 443      * Restores a page using the content of the specified revision.
 444      * @param string $bookSlug
 445      * @param string $pageSlug
 446      * @param int $revisionId
 447      * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
 448      */
 449     public function restoreRevision($bookSlug, $pageSlug, $revisionId)
 450     {
 451         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 452         $this->checkOwnablePermission('page-update', $page);
 453         $page = $this->entityRepo->restorePageRevision($page, $page->book, $revisionId);
 454         Activity::add($page, 'page_restore', $page->book->id);
 455         return redirect($page->getUrl());
 456     }
 457
 458
 459     /**
 460      * Deletes a revision using the id of the specified revision.
 461      * @param string $bookSlug
 462      * @param string $pageSlug
 463      * @param int $revisionId
 464      * @throws NotFoundException
 465      * @throws BadRequestException
 466      * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
 467      */
 468     public function destroyRevision($bookSlug, $pageSlug, $revId)
 469     {
 470         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 471         $this->checkOwnablePermission('page-update', $page);
 472
 473         $revision = $page->revisions()->where('id', '=', $revId)->first();
 474         if ($revision === null) {
 475             throw new NotFoundException("Revision #{$revId} not found");
 476         }
 477
 478         // Get the current revision for the page
 479         $current = $revision->getCurrent();
 480
 481         // Check if its the latest revision, cannot delete latest revision.
 482         if (intval($current->id) === intval($revId)) {
 483             throw new BadRequestException("Cannot delete the current revision #{$revId}");
 484         }
 485
 486         $revision->delete();
 487         session()->flash('success', trans('entities.revision_delete_success'));
 488         return view('pages/revisions', ['page' => $page, 'book' => $page->book, 'current' => $page]);
 489     }
 490
 491     /**
 492      * Exports a page to a PDF.
 493      * https://github.com/barryvdh/laravel-dompdf
 494      * @param string $bookSlug
 495      * @param string $pageSlug
 496      * @return \Illuminate\Http\Response
 497      */
 498     public function exportPdf($bookSlug, $pageSlug)
 499     {
 500         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 501         $page->html = $this->entityRepo->renderPage($page);
 502         $pdfContent = $this->exportService->pageToPdf($page);
 503         return response()->make($pdfContent, 200, [
 504             'Content-Type'        => 'application/octet-stream',
 505             'Content-Disposition' => 'attachment; filename="' . $pageSlug . '.pdf'
 506         ]);
 507     }
 508
 509     /**
 510      * Export a page to a self-contained HTML file.
 511      * @param string $bookSlug
 512      * @param string $pageSlug
 513      * @return \Illuminate\Http\Response
 514      */
 515     public function exportHtml($bookSlug, $pageSlug)
 516     {
 517         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 518         $page->html = $this->entityRepo->renderPage($page);
 519         $containedHtml = $this->exportService->pageToContainedHtml($page);
 520         return response()->make($containedHtml, 200, [
 521             'Content-Type'        => 'application/octet-stream',
 522             'Content-Disposition' => 'attachment; filename="' . $pageSlug . '.html'
 523         ]);
 524     }
 525
 526     /**
 527      * Export a page to a simple plaintext .txt file.
 528      * @param string $bookSlug
 529      * @param string $pageSlug
 530      * @return \Illuminate\Http\Response
 531      */
 532     public function exportPlainText($bookSlug, $pageSlug)
 533     {
 534         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 535         $containedHtml = $this->exportService->pageToPlainText($page);
 536         return response()->make($containedHtml, 200, [
 537             'Content-Type'        => 'application/octet-stream',
 538             'Content-Disposition' => 'attachment; filename="' . $pageSlug . '.txt'
 539         ]);
 540     }
 541
 542     /**
 543      * Show a listing of recently created pages
 544      * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 545      */
 546     public function showRecentlyCreated()
 547     {
 548         $pages = $this->entityRepo->getRecentlyCreatedPaginated('page', 20)->setPath(baseUrl('/pages/recently-created'));
 549         return view('pages/detailed-listing', [
 550             'title' => trans('entities.recently_created_pages'),
 551             'pages' => $pages
 552         ]);
 553     }
 554
 555     /**
 556      * Show a listing of recently created pages
 557      * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 558      */
 559     public function showRecentlyUpdated()
 560     {
 561         $pages = $this->entityRepo->getRecentlyUpdatedPaginated('page', 20)->setPath(baseUrl('/pages/recently-updated'));
 562         return view('pages/detailed-listing', [
 563             'title' => trans('entities.recently_updated_pages'),
 564             'pages' => $pages
 565         ]);
 566     }
 567
 568     /**
 569      * Show the Restrictions view.
 570      * @param string $bookSlug
 571      * @param string $pageSlug
 572      * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 573      */
 574     public function showRestrict($bookSlug, $pageSlug)
 575     {
 576         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 577         $this->checkOwnablePermission('restrictions-manage', $page);
 578         $roles = $this->userRepo->getRestrictableRoles();
 579         return view('pages/restrictions', [
 580             'page'  => $page,
 581             'roles' => $roles
 582         ]);
 583     }
 584
 585     /**
 586      * Show the view to choose a new parent to move a page into.
 587      * @param string $bookSlug
 588      * @param string $pageSlug
 589      * @return mixed
 590      * @throws NotFoundException
 591      */
 592     public function showMove($bookSlug, $pageSlug)
 593     {
 594         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 595         $this->checkOwnablePermission('page-update', $page);
 596         return view('pages/move', [
 597             'book' => $page->book,
 598             'page' => $page
 599         ]);
 600     }
 601
 602     /**
 603      * Does the action of moving the location of a page
 604      * @param string $bookSlug
 605      * @param string $pageSlug
 606      * @param Request $request
 607      * @return mixed
 608      * @throws NotFoundException
 609      */
 610     public function move($bookSlug, $pageSlug, Request $request)
 611     {
 612         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 613         $this->checkOwnablePermission('page-update', $page);
 614
 615         $entitySelection = $request->get('entity_selection', null);
 616         if ($entitySelection === null || $entitySelection === '') {
 617             return redirect($page->getUrl());
 618         }
 619
 620         $stringExploded = explode(':', $entitySelection);
 621         $entityType = $stringExploded[0];
 622         $entityId = intval($stringExploded[1]);
 623
 624
 625         try {
 626             $parent = $this->entityRepo->getById($entityType, $entityId);
 627         } catch (\Exception $e) {
 628             session()->flash(trans('entities.selected_book_chapter_not_found'));
 629             return redirect()->back();
 630         }
 631
 632         $this->checkOwnablePermission('page-create', $parent);
 633
 634         $this->entityRepo->changePageParent($page, $parent);
 635         Activity::add($page, 'page_move', $page->book->id);
 636         session()->flash('success', trans('entities.pages_move_success', ['parentName' => $parent->name]));
 637
 638         return redirect($page->getUrl());
 639     }
 640
 641     /**
 642      * Show the view to copy a page.
 643      * @param string $bookSlug
 644      * @param string $pageSlug
 645      * @return mixed
 646      * @throws NotFoundException
 647      */
 648     public function showCopy($bookSlug, $pageSlug)
 649     {
 650         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 651         $this->checkOwnablePermission('page-update', $page);
 652         session()->flashInput(['name' => $page->name]);
 653         return view('pages/copy', [
 654             'book' => $page->book,
 655             'page' => $page
 656         ]);
 657     }
 658
 659     /**
 660      * Create a copy of a page within the requested target destination.
 661      * @param string $bookSlug
 662      * @param string $pageSlug
 663      * @param Request $request
 664      * @return mixed
 665      * @throws NotFoundException
 666      */
 667     public function copy($bookSlug, $pageSlug, Request $request)
 668     {
 669         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 670         $this->checkOwnablePermission('page-update', $page);
 671
 672         $entitySelection = $request->get('entity_selection', null);
 673         if ($entitySelection === null || $entitySelection === '') {
 674             $parent = $page->chapter ? $page->chapter : $page->book;
 675         } else {
 676             $stringExploded = explode(':', $entitySelection);
 677             $entityType = $stringExploded[0];
 678             $entityId = intval($stringExploded[1]);
 679
 680             try {
 681                 $parent = $this->entityRepo->getById($entityType, $entityId);
 682             } catch (\Exception $e) {
 683                 session()->flash(trans('entities.selected_book_chapter_not_found'));
 684                 return redirect()->back();
 685             }
 686         }
 687
 688         $this->checkOwnablePermission('page-create', $parent);
 689
 690         $pageCopy = $this->entityRepo->copyPage($page, $parent, $request->get('name', ''));
 691
 692         Activity::add($pageCopy, 'page_create', $pageCopy->book->id);
 693         session()->flash('success', trans('entities.pages_copy_success'));
 694
 695         return redirect($pageCopy->getUrl());
 696     }
 697
 698     /**
 699      * Set the permissions for this page.
 700      * @param string $bookSlug
 701      * @param string $pageSlug
 702      * @param Request $request
 703      * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
 704      * @throws NotFoundException
 705      */
 706     public function restrict($bookSlug, $pageSlug, Request $request)
 707     {
 708         $page = $this->entityRepo->getBySlug('page', $pageSlug, $bookSlug);
 709         $this->checkOwnablePermission('restrictions-manage', $page);
 710         $this->entityRepo->updateEntityPermissionsFromRequest($request, $page);
 711         session()->flash('success', trans('entities.pages_permissions_success'));
 712         return redirect($page->getUrl());
 713     }
 714 }