forms - ZF2 相关表单域

Question

如何设置依赖于另一个输入字段的输入过滤器。我只想在选择其他表单域（复选框）时才根据需要设置表单域。

我如何在 zf2 中处理这个？

Answer 1

I use the same idea as Crisp but I prefer to do it in the Form classes instead of the controller. I think it's better to have all validators defined all together in the same place. I do it this way:

1 - All Form classes inherits from a custom BaseForm:

class BaseForm extends ProvidesEventsForm
{
    private $postData;

    protected function getPostData() {
        return $this->postData;
    }

    public function __construct( $name = null, $serviceManager ) {
        parent::__construct( $name );

        $this->serviceManager = $serviceManager;
        $this->request = $serviceManager->get( 'Application' )->getMvcEvent()->getRequest();
        $this->postData = get_object_vars( $this->request->getPost() );
    }
}

This way you can easily pick any value from the post, like your checkbox (you can do the same approach with the route parameters, so you'll have all the view data in your Form).

2 - In the FormEdit class that inherits from BaseForm, you pass the getPostData() value to the SomeFilter this way:

class FormEdit extends BaseForm
{
    public function __construct( $name = null, $serviceManager ) {
        parent::__construct( $name, $serviceManager );

        $filter = new SomeFilter( $this->getPostData() );

        $this->setInputFilter( $filter );
    }

3 - And now just use it in the SomeFilter:

class SomeFilter extends InputFilter
{
    public function __construct( $postData ) {
        if ( $postData[ 'checkbox' ] ) {
            $this->add( array(
                'name'      => 'other_input',
                'required'  => true,
            ) );
        }
    }
}

This way you keep the Controller clean and all the validators in the same place.

Answer 2

您可以测试复选框是否已填充并setValidationGroup相应地在表单上进行验证，然后在您的控制器操作中进行验证...

public function someAction()
{
    $form = new MyForm; // contains name, title, checkbox, required_if_checked fields
    // usual form related setup

    if ($request->isPost()) {
        $form->setData($request->getPost());
        // see if the checkbox is checked
        $checked = $this->params()->fromPost('checkbox', false);
        // not checked, set validation group, omitting the dependent field
        if (!$checked) {
            $form->setValidationGroup(array(
                'name',
                'title',
                'checkbox', // could probably skip this too
            ));
        }        
        if ($form->isValid()) {
            // do stuff with valid data
        }
   }
}