public static function saveMessage($text, $receiver_id)
{
$message = new Message();
$sender_id = Auth::user()->user_id;
$channel = $message->getChannel($sender_id, $receiver_id);
$message->sender_id = $sender_id;
$message->receiver_id = $receiver_id;
$message->text = $text;
$message->TID = $channel;
$pusher = App::make('pusher');
$pusher->trigger($channel, 'messages:onsend', ['message' => $text, 'sender_id' => $sender_id]);
$message->save();
return $message;
}
