如何在octoberCMS的后端中继器控件中显示来自前端表单的输入

// 后端控制器
class MyController extends BackendController
{
    public $implement = ['Backend.Behaviors.FormController'];

    public function formExtendFields($form)
    {
        // 创建继器控件
        $form->addTabFields([
            'input_field' => [
                'label' => '输入字段',
                'type' => 'partial',
                'path' => '$/author/plugin/partials/input_field.htm',
                'tab' => 'Tab Name',
            ],
        ]);
    }

    public function formExtendModel($model)
    {
        // 处理表单提交
        if ($this->formGetContext() == 'update') {
            $data = post('Model');
            // 处理数据
        }
    }
}

// 后端表单类
class MyForm extends \Backend\Classes\FormWidget
{
    public function render()
    {
        // 渲染继器控件
        $this->vars['input_value'] = $this->getLoadValue('input_field');
        return $this->makePartial('input_field');
    }

    public function getSaveValue($value)
    {
        // 处理保存的值
        return $value;
    }
}