如何替换File装饰器？

Question

我试过这样做......

$element->removeDecorator( 'File');

$decorator = new Cms_Form_Decorator_ImageUpload;

// add to front of decorators
$decorators = $element->getDecorators();
array_unshift( $decorators, $decorator );
$element->setDecorators( $decorators );

但在Zend_Form_Element_File＆＃34;文件装饰器中发现了一个异常，无法呈现文件元素＆＃34;

Answer 1

Cms_Form_Decorator_ImageUpload类需要实现Zend_Form_Decorator_Marker_File_Interface。