Forms zend形式相关下拉列表

我有两个选择部门和名称的下拉列表

$model = new Application_Model_DbTable_Department();
$departments = $model->fetchAll();
$department = $this->createElement('select','department');
$department->setLabel('Department');
$department->setAttrib('class', 'department');
foreach($departments as $d)
    $department->addMultiOption($d->id, $d->depname);

$model = new Application_Model_DbTable_Designation();
$designations = $model->fetchAll('depid=1');
$designation = $this->createElement('select','designation');
$designation->setLabel('Designation');
$designation->setAttrib('class', 'designation');
$designation->setRegisterInArrayValidator(false);
foreach($designations as $ds)
    $designation->addMultiOption($ds->id, $ds->designation);

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我有jquery函数，可以在部门发生变化时查找名称。我的问题是在提交表单时如果表单有验证错误，我需要显示所选的名称

在这种情况下，最好在表单实例化后进行表单填充。原因：初始化时几乎不可能获取表单元素的值，因为它们还不存在（即，在

Zend\u表单的
init（）方法中）。您可以这样做：

$form = new Your_Zend_Form();
$designation = $form->getElement('designation');

$departmentId = null;

$request = $this->getRequest();

if($request->isPost()){
    $departmentId = $request->getPost('department');
}

$desigantionOptions = $this->_getDesignationOptions($departmentId);

$designation->addMultiOptions($desigantionOptions);

这将是在你的控制器的行动或东西。。。但本质上，你的指定选项将从当前部门获取值（如果该职位提供），否则它将属于默认选项。
$this->\u getDesignationOptions（$departmentId）
的方法签名如下：

protected function _getDesignationOptions($departmentId = null);

这将返回一个值/选项对数组