OEModule\OphCoMessaging\controllers\DefaultController::canMarkCommentRead PHP Method

    protected function canMarkCommentRead($el)
    {
        if ($this->isSender(\Yii::app()->user)) {
            foreach ($el->comments as $comment) {
                if (!$comment->marked_as_read) {
                    return true;
                }
            }
        }
        return false;
    }