fix: added category ID to cache key

Author: infinitnet

README.md

@@ -28,5 +28,6 @@ For support, feature requests, or bug reports, please visit the [GitHub issues p
 Contributions to the plugin are welcome. Please fork the GitHub repository and submit a pull request.
 
 ## Changelog
+- **1.2**: Fix: cache key has to include category ID.
 - **1.1**: Transient caching logic and cache clearing improved.
 - **1.0**: Initial release.

relevant-recent-posts.php

@@ -6,7 +6,7 @@
  * Author URI: https://infinitnet.io/
  * Plugin URI: https://github.com/infinitnet/relevant-recent-posts
  * Update URI: https://github.com/infinitnet/relevant-recent-posts
- * Version: 1.1
+ * Version: 1.2
  * License: GPLv3
  * Text Domain: relevant-recent-posts
  */
@@ -65,6 +65,18 @@ function infinitnet_relevant_recent_posts_shortcode($atts) {
         $serialized_atts = serialize($relevant_atts);
 
         $cache_key = "rrp_" . md5($serialized_atts);
+
+        if ($atts['scope'] === 'category') {
+            $categories = get_the_category($post->ID);
+            if (!empty($categories)) {
+                $category_ids = array_map(function($category) {
+                    return $category->term_id;
+                }, $categories);
+                $args['category__in'] = $category_ids;
+
+                $cache_key .= '_' . implode('_', $category_ids);
+            }
+        }
 
         $output = get_transient($cache_key);