Merge pull request #9 from OHTU-German-learning-website/master

pull changes to my branch

gradesa/data/migrations/00045_fix_impressum_style_attribute.sql

@@ -0,0 +1,4 @@
+-- Remove empty style attribute that caused React errors on the Impressum page
+UPDATE html_pages 
+SET content = REPLACE(content, 'style=""', '') 
+WHERE page_group = 'system' AND slug = 'impressum';

gradesa/src/app/api/pages/[type]/[slug]/route.js

@@ -98,7 +98,7 @@ function sanitize(data) {
   const window = new JSDOM("").window;
   const purify = DOMPurify(window);
   const cleaned = purify.sanitize(data, { ADD_ATTR: ["target"] });
-  return cleaned;
+  return cleaned.replace(/\s+style=""/g, "");
 }
 
 async function slugIsInUse(type, slug) {

gradesa/src/components/ui/render-html/render-html.jsx

@@ -63,6 +63,10 @@ const prefixRootRelativePath = (value) => {
 export default function RenderHTML({ data, disableGlossary = false }) {
   if (!data) return null;
 
+  // Strip empty style attributes before parsing so React does not receive
+  // an invalid string value for the style prop.
+  const cleanedData = data.replace(/\s+style=""/g, "");
+
   const renderParagraph = (attributes, children) =>
     disableGlossary ? (
       <p {...attributes}>{children}</p>
@@ -135,6 +139,6 @@ export default function RenderHTML({ data, disableGlossary = false }) {
     return handler ? handler(normalizedAttributes, children) : undefined;
   };
 
-  const parsedContent = parse(data, { replace: replacer });
+  const parsedContent = parse(cleanedData, { replace: replacer });
   return <div className="rendered-html">{parsedContent}</div>;
 }