Blog\Controller\IndexController::documentCommentAction PHP Method

    public function documentCommentAction()
    {
        $documentId = $this->params()->fromRoute('id');
        $document = DocumentModel::fromId($documentId);
        if (empty($document)) {
            return $this->redirect()->toRoute('module/blog');
        }
        $model = new Model\Comment();
        $commentList = $model->getList($documentId, null);
        if ($this->getRequest()->isPost()) {
            $comments = $this->getRequest()->getPost()->get('comment');
            foreach ($comments as $commentId => $data) {
                if (!empty($data['delete'])) {
                    $model->delete(array('id' => $commentId));
                    continue;
                }
                foreach ($data as $k => $v) {
                    if (!in_array($k, $this->whiteList)) {
                        unset($data[$k]);
                    }
                }
                $data['show_email'] = empty($data['show_email']) ? 0 : 1;
                $data['is_active'] = empty($data['is_active']) ? 0 : 1;
                $model->update($data, array('id' => $commentId));
            }
            return $this->redirect()->toRoute('module/blog/document-comment', array('id' => $documentId));
        }
        return array('comment_list' => $commentList, 'document' => $document);
    }