Add method to clear the media cache

classes/adminbasecontroller.php

@@ -924,6 +924,20 @@ class AdminBaseController
         }
     }
 
+    /**
+     * Handles clearing the media cache
+     *
+     * @return bool True if the action was performed
+     */
+    protected function clearMediaCache()
+    {
+        $key = 'media-manager-files';
+        $cache = $this->grav['cache'];
+        $cache->delete(md5($key));
+
+        return true;
+    }
+
     /**
      * Determine if the user can edit media
      *