Attendance: Show Attendance QR code in an modal window and not as a file for download -refs BT#21018

main/attendance/attendance_sheet.php

@@ -116,7 +116,7 @@ if (api_is_allowed_to_edit(null, true) ||
             Display::return_icon('pdf.png', get_lang('ExportToPDF'), '', ICON_SIZE_MEDIUM).'</a>';
         $actionsLeft .= '<a id="pdf_export" style="float:left;"  href="index.php?'.api_get_cidreq().'&action=attendance_sheet_export_to_xls&attendance_id='.$attendance_id.'&filter='.$default_filter.'&group_id='.$groupId.'">'.
             Display::return_icon('export_excel.png', get_lang('ExportToXls'), '', ICON_SIZE_MEDIUM).'</a>';
-        $actionsLeft .= '<a style="float:left;" title="QR"  href="index.php?'.api_get_cidreq().'&action=attendance_sheet_qrcode&attendance_id='.$attendance_id.'&filter='.$default_filter.'&group_id='.$groupId.'">'.
+        $actionsLeft .= '<a class="ajax" data-size="sm" style="float:left;" title="QR"  href="index.php?'.api_get_cidreq().'&action=attendance_sheet_qrcode&attendance_id='.$attendance_id.'&filter='.$default_filter.'&group_id='.$groupId.'">'.
             Display::return_icon('paint.png', get_lang('DownloadQr'), '', ICON_SIZE_MEDIUM).'</a>';
         $actionsRight = $form->returnForm();
         $toolbar = Display::toolbarAction('toolbar-attendance', [$actionsLeft, $actionsRight]);

main/attendance/index.php

@@ -272,14 +272,24 @@ if (isset($_POST['action']) && $_POST['action'] == 'attendance_set_visible_selec
 
 switch ($action) {
     case 'attendance_sheet_qrcode':
-        header("Content-Type: image/png");
-        header("Content-Disposition: attachment; filename=AttendanceSheetQRcode.png");
+        header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
+        header('Cache-Control: no-cache, must-revalidate');
+        header('Pragma: no-cache');
         $renderer = new \BaconQrCode\Renderer\Image\Png();
         $renderer->setHeight(256);
         $renderer->setWidth(256);
         $writer = new \BaconQrCode\Writer($renderer);
         $attendanceSheetLink = api_get_path(WEB_CODE_PATH).'attendance/index.php?'.api_get_cidreq().'&action=attendance_sheet_list_no_edit&attendance_id='.$attendance_id;
-        echo $writer->writeString($attendanceSheetLink);
+        $filename = "attendanceqrcode".uniqid().".png";
+        if (!is_dir(api_get_path(SYS_UPLOAD_PATH).'attendance')) {
+            @mkdir(
+                api_get_path(SYS_UPLOAD_PATH).'attendance',
+                api_get_permissions_for_new_directories(),
+                true
+            );
+        }
+        $writer->writeFile($attendanceSheetLink,api_get_path(SYS_UPLOAD_PATH).'attendance/'.$filename);
+        echo '<img src="'.api_get_path(WEB_UPLOAD_PATH).'attendance/'.$filename.'" alt="AttendanceQR">';
         exit;
     case 'attendance_list':
         $attendanceController->attendance_list();