如何将选项/参数传递给ZendFramework 2中的formCollection字段集?

时间:2014-05-30 11:18:52

标签: php zend-framework2 zend-form formcollection

我有一个Form,其中包含一个带有select元素的formCollection,我希望根据POST参数填充值(来自SQL)。

将此参数从控制器传递到表单不是问题,但现在我找不到在formCollection的target_element中设置/读取该参数的方法。关于如何使其发挥作用的任何想法?

这是我的代码:

控制器

class MyController extends AbstractActionController{
    public function indexAction()
    {
        $form = $this->serviceLocator->get('FormElementManager')->get('Module\Form\myForm');
        $form->init([
            'param' => $this->params()->fromPost('param')
        ]);
    }
}

表格

class myForm extends Form
{
    private $sm;
    public function __construct($sm = null)
    {
        parent::__construct();
        $this->sm = $sm;
    }

    public function init($params=[])
    {
        $this->add([
            'name' => 'choices',
            'type' => 'Zend\Form\Element\Collection',
            'options' => [
                'label' => 'SelectLabel',
                'count' => 1,
                'should_create_template' => true,
                'allow_add' => true,
                'template_placeholder' => '__placeholder__',
                'target_element' => [
                    'type' => 'Module\Form\choicesFieldset',
                    'options' => [
                        'param' => isset($params['param']) ? $params['param'] : 0,
                    ]
                ],
            ],
        ]);
    }
}

字段集

class choicesFieldset extends Fieldset{
    private $sm;
    public function __construct($sm = null){
        parent::__construct();

        $this->sm = $sm;
    }

    public function init(){
        $param = $this->getOption('param');

        $availableChoices = /* SQL_QUERY_BASED_ON_PARAM; */

        $this->add([
            'name' => 'choice_1',
            'type' => 'Select',
            'options' => [
                'label' => 'First choice',
                'value_options' => $availableChoices,
            ]
        ]);
    }
}

提前感谢您的帮助。

1 个答案:

答案 0 :(得分:3)

您需要做的就是从服务管理器获取Request实例;检查所需的参数,然后将其“注入”表单。

在表格工厂中这样做会更有意义;而不是在控制器内重复自己。

例如:

public function getFormElementConfig()
{
    return array(
        'factories' => array(

            'MyModule\Form\MyForm' => function($formElementManager) {

                $serviceManager = $formElementManager->getServiceLocator();

                $request = $serviceManager->get('Request');

                // defaults to 0 if not set  
                $param   = $request->getPost('the_posted_variable_name', 0); 

                $options = array(
                    'my_custom_option_name' => $param,
                );

                // You should maintain the Zend\Form\Element::__construct() method signuture
                // as it allows for the 'options' to be passed in.
                // Alternatively you could use $form->setOption('param', $options)
                // and inject the options as a soft dependency
                $form = new Form\MyForm('my_form', $options, $serviceManager);

                // ... other form stuff here

                return $form;
            },

        ),
    );
}

现在您可以使用以下内容在表单中使用该选项:

$param = $this->getOption('my_custom_option_name');