Question

我正在根据 survey_question_reference 的路径值创建一个需要动态选项的表单

'main-surveyquestions'=> [
    'type'    => 'segment',
    'options' => [
        'route'       => '/survey-questions[/:survey_question_reference][/:answer]',
        'constraints' => [
            'survey_question_reference' => '[0-9]*',
            'answer' => '(answer)',
        ],
        'defaults'    => [
            'controller' => 'Main\Controller\Main',
            'action'     => 'surveyquestions'
        ]
    ]
],

这是调用Form：

的FormElement代码

/**
 * Init
 */
public function init()
{
    /**
     * Survey Answer
     */
    $this->add(
        [
            'type'       => 'Main\Form\Element\SurveyAnswerRadio',
            'name'       => 'survey_answer',
            'options'    => [
                'label' => 'survey_answer'
            ],
            'attributes' => [
                'id' => 'survey_answer'
            ]
        ]
    );
}

以下是表单元素的代码。我有硬编码的地方'sqReference'=＆gt; “1” 1 需要替换为路径中 survey_question_reference 的值。

namespace Main\Form\Element;

use Doctrine\ORM\EntityManager;
use Zend\Form\Element\Radio;

/**
 * Class SurveyAnswerRadio
 *
 * @package Main\Form\Element
 */
class SurveyAnswerRadio extends Radio
{
    /**
     * @var EntityManager $entityManager
     */
    protected $entityManager;

    /**
     * @param EntityManager $entityManager
     */
    public function __construct(EntityManager $entityManager)
    {
        $this->entityManager = $entityManager;
    }

    /**
     * Get Value Options
     *
     * @return array
     *
     * @throws \Exception
     */
    public function getValueOptions()
    {
        $array = [];

        $result = $this->entityManager
            ->getRepository('AMDatabase\Entity\TheVerse\SA')
            ->findBy(
                [
                    'sqReference' => '1'
                ],
                [
                    'surveyAnswer' => 'ASC'
                ]
            );

        if (is_array($result) && count($result) > '0') {
            /**
             * @var \AMDatabase\Entity\TheVerse\SA $val
             */
            foreach ($result as $val) {
                $array[$val->getReference()] = $val->getSurveyAnswer();
            }
        }

        return $array;
    }
}

Answer 1

我建议改变做法。首先，不要试图扩展根本不需要的无线电元素。您可以在表单类中执行相同操作。其次，您的实体管理器也不能在Radio / Form类中工作，直到您的查找机制通过。

所以我建议如下解决方案。

首先将您的表单类注册到module.config.php中的工厂

'form_elements' => array(
    'factories' => array(
         'Main\Form\YourFormName' => function($sm) {
            $form = new Form\YourFormName();
            $form->setEntityManager($sm->getServiceLocator()->get('Doctrine\ORM\EntityManager'));
            $form->setServiceLocator($sm->getServiceLocator());
            return $form;
         },
     ),
),

然后将entityManager和serviceLocator实现到表单类中。

use DoctrineModule\Persistence\ObjectManagerAwareInterface;
use Doctrine\Common\Persistence\ObjectManager;
use Zend\ServiceManager\ServiceLocatorAwareInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

class YourFormName extends Form implements ObjectManagerAwareInterface, ServiceLocatorAwareInterface
{
    protected $entityManager;
    protected $serviceLocator;

    public function setServiceLocator(ServiceLocatorInterface $serviceLocator)
    {
        $this->serviceLocator = $serviceLocator;
    }

    public function getServiceLocator()
    {
        return $this->serviceLocator;
    }
    public function setEntityManager(ObjectManager $entityManager)
    {
        $this->entityManager = $entityManager;
    }

    public function getEntityManager()
    {
        return $this->entityManager;
    }

然后在init方法中，您已经初始化了serviceLocator / entityManager。

public function init()
{
    $routeMatch = $this->getServiceLocator()->get('Application')->getMvcEvent()->getRouteMatch();

    $array = [];

    $result = $this->entityManager
        ->getRepository('AMDatabase\Entity\TheVerse\SA')
        ->findBy(
            [
                'sqReference' => $routeMatch->getParam('survey_question_reference')
            ],
            [
                'surveyAnswer' => 'ASC'
            ]
        );

    if (is_array($result) && count($result) > '0') {
        /**
         * @var \AMDatabase\Entity\TheVerse\SA $val
         */
        foreach ($result as $val) {
            $array[$val->getReference()] = $val->getSurveyAnswer();
        }
    }

     $this->add(
    [
        'type'       => 'Zend\Form\Element\Radio',
        'name'       => 'survey_answer',
        'options'    => [
            'label' => 'survey_answer',
            'value_options' => $array,
        ],
        'attributes' => [
            'id' => 'survey_answer',

        ]
    ]
);

Answer 2

您需要注意的是<{strong>注入 survey_question_reference参数到您的FormElement。你可以按照@ kuldeep.kamboj的建议在他的答案中做到这一点。但是，如果您不想更改方法并保留自定义SurveyAnswerRadio元素，则必须在代码中进行一些更改：

使SurveyAnswerRadio实现Zend\ServiceManager\ServiceLocatorAwareInterface，以便您可以实现setServiceLocator和getServiceLocator，这些是ServiceManager在实例化元素时自动注入服务定位器所必需的。
您的表单还应实现Zend\ServiceManager\ServiceLocatorAwareInterface。
在getFormElementConfig。

Module.php

现在让我们看看代码。你会有这样的事情：

SurveyAnswerRadio：

class SurveyAnswerRadio extends Radio implements ServiceLocatorAwareInterface
{
   //Add these two methods

   public function setServiceLocator(ServiceLocatorInterface $sl)
   {
      $this->serviceLocator = $sl;
   }

   public function getServiceLocator()
   {
      return $this->serviceLocator;
   }

   public function getValueOptions()
   {
    $array = [];
    $serviceManager = $this->serviceLocator->getServiceLocator();
    $em = $serviceManager->get('Doctrine\ORM\EntityManager');
    $sqReference = $serviceManager->get('application')->getMvcEvent()
                  ->getRouteMatch()->getParam('survey_question_reference');

    $result = $em->getRepository('AMDatabase\Entity\TheVerse\SA')
                 ->findBy(
                        ['sqReference' => $sqReference],
                        ['surveyAnswer' => 'ASC']
                  );

    if (is_array($result) && count($result) > '0') {
        foreach ($result as $val) {
            $array[$val->getReference()] = $val->getSurveyAnswer();
        }
    }

    return $array;
  }
}

Module.php：

按如下方式实施getFormElementConfig方法。这允许使用别名ModuleName\Form\Element\SurveyAnswerRadio实例化或调用类SurveyAnswerRadio。

class Module implements FormElementProviderInterface
{

 // other stuff .....

public function getFormElementConfig()
{
    return array(
        'invokables' => array(
            'SurveyAnswerRadio' => 'ModuleName\Form\Element\SurveyAnswerRadio'
        )
    );
}
}

表单init方法中不需要进行任何更改。

请注意，在您的控制器中，您必须通过Form实例化FormElementManager：

$formManager = $this->serviceLocator->get('FormElementManager'); 
$form = $formManager->get('ModuleName\Form\YourForm');

请在documentation

另请参阅此post，其中介绍了如何在表单中的自定义Select元素中管理依赖项。

ZF2通过路线形成元素

2 个答案: