fix #1632

Closes #1632

Merge request studip/studip!1103

app/controllers/course/courseware.php

@@ -103,8 +103,8 @@ class Course_CoursewareController extends AuthenticatedController
     public function pdf_export_action($element_id, $with_children)
     {
         $element = \Courseware\StructuralElement::findOneById($element_id);
-
-        $this->render_pdf($element->pdfExport($this->user, $with_children), trim($element->title).'.pdf');
+        $user = User::find($GLOBALS['user']->id);
+        $this->render_pdf($element->pdfExport($user, $with_children), trim($element->title).'.pdf');
     }
 
     private function setIndexSidebar(): void

lib/models/Courseware/StructuralElement.php

@@ -918,7 +918,7 @@ SQL;
             $doc->setHeaderTitle(sprintf(_('Courseware von %s'), $this->user->getFullname()));
         }
 
-        if (!self::canRead($user)) {
+        if (!self::canVisit($user)) {
             $doc->addPage();
             $doc->addContent(_('Diese Seite steht Ihnen nicht zur Verfügung!'));
 
@@ -943,7 +943,7 @@ SQL;
 
     private function getElementPdfExport(int $depth, bool $with_children, $user, $doc)
     {
-        if (!$this->canRead($user)) {
+        if (!$this->canVisit($user)) {
             return '';
         }
         $doc->addPage();