From 42703dd859f6eb1917c2547da106f0de646674a6 Mon Sep 17 00:00:00 2001
From: Dan Brown <ssddanbrown@googlemail.com>
Date: Sun, 28 Nov 2021 21:01:35 +0000
Subject: [PATCH] Tweaked pdf export iframe replacement to fix compatibility

Was using a method that wasn't a proper available part of the
DomElement API.
---
 app/Entities/Tools/ExportFormatter.php | 4 ++--
 app/Entities/Tools/PdfGenerator.php    | 6 ++----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/app/Entities/Tools/ExportFormatter.php b/app/Entities/Tools/ExportFormatter.php
index ebe0020e7..7f377cadb 100644
--- a/app/Entities/Tools/ExportFormatter.php
+++ b/app/Entities/Tools/ExportFormatter.php
@@ -144,6 +144,7 @@ class ExportFormatter
     {
         $html = $this->containHtml($html);
         $html = $this->replaceIframesWithLinks($html);
+
         return $this->pdfGenerator->fromHtml($html);
     }
 
@@ -159,7 +160,6 @@ class ExportFormatter
         $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
         $xPath = new DOMXPath($doc);
 
-
         $iframes = $xPath->query('//iframe');
         /** @var DOMElement $iframe */
         foreach ($iframes as $iframe) {
@@ -172,7 +172,7 @@ class ExportFormatter
             $anchor->setAttribute('href', $link);
             $paragraph = $doc->createElement('p');
             $paragraph->appendChild($anchor);
-            $iframe->replaceWith($paragraph);
+            $iframe->parentNode->replaceChild($paragraph, $iframe);
         }
 
         return $doc->saveHTML();
diff --git a/app/Entities/Tools/PdfGenerator.php b/app/Entities/Tools/PdfGenerator.php
index d606617a4..a14f29d4b 100644
--- a/app/Entities/Tools/PdfGenerator.php
+++ b/app/Entities/Tools/PdfGenerator.php
@@ -2,12 +2,11 @@
 
 namespace BookStack\Entities\Tools;
 
-use Barryvdh\Snappy\Facades\SnappyPdf;
 use Barryvdh\DomPDF\Facade as DomPDF;
+use Barryvdh\Snappy\Facades\SnappyPdf;
 
 class PdfGenerator
 {
-
     /**
      * Generate PDF content from the given HTML content.
      */
@@ -24,5 +23,4 @@ class PdfGenerator
 
         return $pdf->output();
     }
-
-}
\ No newline at end of file
+}