发生错误后，使用Dropzone重新预览预览中的所有文件

Question

我正在尝试将dropzone.js与其他表单元素结合使用，除了一件事，一切都正常。我有一些其他表单元素的验证规则，当其中一个验证规则失败时，它会发送带有ajax响应的错误。发生错误时，所有dropzone文件都会从队列中取消。然后我需要再次手动添加删除的文件并提交表单。即使发生错误，有没有办法将所有图像文件保留在队列中，以便我可以尝试重新发送它们？

这是我的dropzone配置：

autoProcessQueue: false,
uploadMultiple: true,
parallelUploads: 5,
maxFiles: 5,
addRemoveLinks:true,

这是在表单提交后调用的方法：

public function save($request)
{
    $request = $request->all();

    // Create a new validator instance from our validation rules
    $validator = Validator::make($request, $this->validationRules);

    // If validation fails, we'll exit the operation now.
    if ($validator->fails())
    {
        // Ooops.. something went wrong
        $this->errors = $validator->errors();

        return false;
    }
    $user_id = getLoggedInId();

    $request['operator_id'] = $this->operator->getId($user_id);

    $result = $this->visit->add($request);


    if ($result == 'updated')
    {
        $this->success = 'Successfully Updated!';

        return $result;
    }
    elseif ($result == 'failed')
    {
        $this->errors = 'failed!';

        return false;
    }
    elseif ($result == 'notAllowed')
    {
        $this->errors = 'Not Allowed to update this record';

        return false;
    }
    else
    {
        if (Input::file('file'))
        {
            $visit_id = $result->id;
            $files = Input::file('file');
            $today = Carbon::now();
            $patient_id = Input::get('patient_uid'); //need more validation later on
            $center_id = substr($patient_id, 0, 3);
            $uid = substr($patient_id, -5);
            $upload_dir = $center_id . '/' . $today->year . '/' . $today->month . '/';
            foreach ($files as $file)
            {
                // public/uploads
                $response = $this->report->upload($file, $upload_dir, $visit_id, $uid);
                if ($response['error'])
                {
                    $this->errors = $response['message'];

                    return false;
                }
            }
        }
        $this->success = trans('patients/visit_form.successfully_created');

        return $result;
    }

这是提交表单的逻辑：

    this.element.querySelector("input[type=submit]").addEventListener("click", function(e) {
        // Make sure that the form isn't actually being sent.
        e.preventDefault();
        e.stopPropagation();
        if (myDropzone.getQueuedFiles().length > 0)
        {
            myDropzone.processQueue();
        } else {
            submitVisitForm();
        }
    });