Fix compatibility issue with CKEditor 4.1.0

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 3.1.1 - 2024-06-14
+### Fixed
+- Fixes a compatibility issue with CKEditor 4.1, where applying a Retcon filter to a CKEditor field's output would cause nested entries to not render 
+
 ## 3.1.0 - 2024-06-10
 ### Added  
 - Adds support for the body element selector (i.e. `'body'`), which can be used in conjunction with the child combinator to only select top-level nodes (e.g. `'body > p'`). [#68](https://github.com/mmikkel/Retcon-Craft/issues/68) 

composer.json

@@ -2,7 +2,7 @@
     "name": "mmikkel/retcon",
     "description": "Powerful Twig filters for mutating and querying HTML",
     "type": "craft-plugin",
-    "version": "3.1.0",
+    "version": "3.1.1",
     "keywords": [
         "craft",
         "cms",

src/helpers/RetconHelper.php

@@ -4,6 +4,7 @@
 
 use aelvan\imager\Imager;
 
+use craft\ckeditor\data\FieldData;
 use spacecatninja\imagerx\ImagerX;
 
 use mmikkel\retcon\models\RetconSettings;
@@ -44,12 +45,14 @@ class RetconHelper
      * @param mixed $value
      * @return null|string
      */
-    public static function getHtmlFromParam($value): ?string
+    public static function getHtmlFromParam(mixed $value): ?string
     {
         if (empty($value)) {
             return null;
         }
-        if ($value instanceof HtmlFieldData) {
+        if ($value instanceof FieldData) {
+            $html = $value->__toString();
+        } elseif ($value instanceof HtmlFieldData) {
             $html = $value->getRawContent();
         } else {
             $html = (string)$value;