Fix sendToActiveChats to correctly check if the callback action is valid.

fixes #897

Author: noplanman

CHANGELOG.md

@@ -14,6 +14,7 @@ Exclamation symbols (:exclamation:) note something of importance e.g. breaking c
 ### Deprecated
 ### Removed
 ### Fixed
+- `sendToActiveChats` now works correctly for any valid Request action.
 ### Security
 
 ## [0.54.0] - 2018-07-21

src/Request.php

@@ -605,17 +605,15 @@ public static function sendToActiveChats(
         array $data,
         array $select_chats_params
     ) {
-        if (!method_exists(Request::class, $callback_function)) {
-            throw new TelegramException('Method "' . $callback_function . '" not found in class Request.');
-        }
+        self::ensureValidAction($callback_function);
 
         $chats = DB::selectChats($select_chats_params);
 
         $results = [];
         if (is_array($chats)) {
             foreach ($chats as $row) {
                 $data['chat_id'] = $row['chat_id'];
-                $results[]       = call_user_func(Request::class . '::' . $callback_function, $data);
+                $results[]       = self::send($callback_function, $data);
             }
         }