Php 如何使用zend framework制作自定义图像文件表单

如何通过扩展zend form元素来创建自定义图像文件？html格式的输出如下所示：

<div class="image-file-wrapper">
     <img src="yourimagepath" />
     <br />
     <input id="image-file" name="image-file" type="file" />
</div>

我的自定义视图帮助程序：

class Engine_View_Helper_FormImageFile extends Zend_View_Helper_FormElement {
public function formImageFile($name, $value = null, $attribs = null, $options = null) {
    return '<div class="image-file-wrapper"><img src="test.png" /><input type="file" /></div>';    
}    
}

发生错误：

Warning: Exception caught by form: No file decorator found... unable to render file element Stack Trace: #0 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form\Decorator\FormElements.php(101): Zend_Form_Element_File->render() #1 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php(2904): Zend_Form_Decorator_FormElements->render('') #2 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php(2920): Zend_Form->render() #3 C:\xampp\htdocs\NEOBBS_v6\application\themes\admin\settings.phtml(8): Zend_Form->__toString() #4 C:\xampp\htdocs\NEOBBS_v6\library\Zend\View.php(108): include('C:\xampp\htdocs...') #5 C:\xampp\htdocs\NEOBBS_v6\library\Zend\View\Abstract.php(880): Zend_View->_run('C:\xampp\htdocs...') #6 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Controller\Action\Helper\ViewRenderer.php(897): Zend_View_Abstract->render('settings.phtml') #7 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Controller\Action.php(243): Zend_Controller_Action_Helper_ViewRenderer->renderScript('settings.phtml', NULL) #8 C:\xampp\htdocs\NEOBBS_v6\application\modules\admin\contr in C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php on line 2925

我怎么修理它

提前感谢,

---

Brian使用Zend\u Form\u Decorator\u ViewScript。有关详细信息：

是的，但我总是收到错误：警告：表单捕获的异常：注册表中找不到名为“FormImageFile”的插件；使用的路径：

$this->addElement('ImageFile', 'imageFile', array('label' => 'Test Image'));

Warning: Exception caught by form: No file decorator found... unable to render file element Stack Trace: #0 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form\Decorator\FormElements.php(101): Zend_Form_Element_File->render() #1 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php(2904): Zend_Form_Decorator_FormElements->render('') #2 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php(2920): Zend_Form->render() #3 C:\xampp\htdocs\NEOBBS_v6\application\themes\admin\settings.phtml(8): Zend_Form->__toString() #4 C:\xampp\htdocs\NEOBBS_v6\library\Zend\View.php(108): include('C:\xampp\htdocs...') #5 C:\xampp\htdocs\NEOBBS_v6\library\Zend\View\Abstract.php(880): Zend_View->_run('C:\xampp\htdocs...') #6 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Controller\Action\Helper\ViewRenderer.php(897): Zend_View_Abstract->render('settings.phtml') #7 C:\xampp\htdocs\NEOBBS_v6\library\Zend\Controller\Action.php(243): Zend_Controller_Action_Helper_ViewRenderer->renderScript('settings.phtml', NULL) #8 C:\xampp\htdocs\NEOBBS_v6\application\modules\admin\contr in C:\xampp\htdocs\NEOBBS_v6\library\Zend\Form.php on line 2925