如何解决Symfony (嵌入式)窗体中的数据类型冲突？
如何解决Symfony (嵌入式)窗体中的数据类型冲突？
提问于 2014-08-14 12:12:07
我正在试图建立一个表格来回答一个小的调查。
在用我的表单加载页面时，我会得到以下错误：
表单的视图数据应该是标量、数组或\ArrayAccess实例的类型，但它是类VS\myproject\UserBundle\Entity\User的实例。可以通过将"data_class“选项设置为" VS\myproject\UserBundle\Entity\User”，或者添加视图转换器，将VS\myproject\UserBundle\Entity\User类的实例转换为标量、数组或\ArrayAccess实例，从而避免此错误。
--我一开始看不出我将在哪里使用用户实体，并且很难从这个错误消息中得到一些东西。有人能帮忙吗？
更多信息
堆栈跟踪
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 353 +
at Form ->setData (object(User))
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\Extension\Core\DataMapper\PropertyPathMapper.php at line 57 +
at PropertyPathMapper ->mapDataToForms (object(CustomerSurvey), object(RecursiveIteratorIterator))
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 385 +
at Form ->setData (object(CustomerSurvey))
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\Form.php at line 477 +
at Form ->initialize ()
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\FormBuilder.php at line 230 +
at FormBuilder ->getForm ()
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Component\Form\FormFactory.php at line 39 +
at FormFactory ->create (object(CustomerSurveyType), object(CustomerSurvey), array())
in <myprojectdirectorypath>\vendor\symfony\symfony\src\Symfony\Bundle\FrameworkBundle\Controller\Controller.php at line 181 +
at Controller ->createForm (object(CustomerSurveyType), object(CustomerSurvey))
in <myprojectdirectorypath>\src\VS\Myapp\MobileBundle\Controller\SurveyController.php at line 33 +
at SurveyController ->takeSurveyAction ('1')
at call_user_func_array (array(object(SurveyController), 'takeSurveyAction'), array('1'))
in <myprojectdirectorypath>\app\bootstrap.php.cache at line 2969 +
at HttpKernel ->handleRaw (object(Request), '1')
in <myprojectdirectorypath>\app\bootstrap.php.cache at line 2931 +
at HttpKernel ->handle (object(Request), '1', true)
in <myprojectdirectorypath>\app\bootstrap.php.cache at line 3080 +
at ContainerAwareHttpKernel ->handle (object(Request), '1', true)
in <myprojectdirectorypath>\app\bootstrap.php.cache at line 2330 +
at Kernel ->handle (object(Request))
in <myprojectdirectorypath>\web\app_dev.php at line 28 + 数据模型
([]中实体)
调查具有一个或多个SurveyItem，可以作为CustomerSurvey分配给一个或多个用户。
在构建表单时，每个SurveyItem都会为当前CustomerSurvey创建一个SurveyItemResult。
控制器
构建调查响应表单(基于实体CustomerSurvey并嵌入所有相关的SurveyItemResult)的控制器如下所示：
<?php
namespace VS\Myapp\MobileBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use VS\Myapp\WebBundle\Entity\SurveyItemResult;
use VS\Myapp\MobileBundle\Form\Type\CustomerSurveyType;
class SurveyController extends Controller
{
public function indexAction()
{
$customerSurveys = $this->getUser()->getCustomerSurveys();
return $this->render('VSMyappMobileBundle:Survey:index.html.twig', array('customerSurveys' => $customerSurveys));
}
public function takeSurveyAction($customerSurveyId)
{
$customerSurvey = $this->getDoctrine()->getRepository('VSMyappWebBundle:CustomerSurvey')->find($customerSurveyId);
foreach($customerSurvey->getSurvey()->getItems() as $surveyItem)
{
$csr = new SurveyItemResult();
$csr->setSurveyItem($surveyItem);
$customerSurvey->addResult($csr);
}
$form = $this->createForm(new CustomerSurveyType(), $customerSurvey);
return $this->render('VSMyappMobileBundle:Survey:takeSurvey.html.twig', array( 'form' => $form->createView()));
}
}表格类型
这是我为CustomerSurvey构建的表单类型
<?php
namespace VS\Myapp\MobileBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class CustomerSurveyType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('results', 'collection', array('type' => new SurveyItemResultType()));
$builder->add('customer', 'hidden');
$builder->add('survey', 'hidden');
$builder->add('save', 'submit', array('label' => 'Submit your answer'));
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'VS\Myapp\WebBundle\Entity\CustomerSurvey',
));
}
public function getName()
{
return 'customerSurvey';
}
}这是应该嵌入的SurveyItemResult的表单类型：
<?php
namespace VS\Myapp\MobileBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
class SurveyItemResultType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('textResult', 'text');
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'VS\Myapp\WebBundle\Entity\SurveyItemResult',
));
}
public function getName()
{
return 'surveyItemResult';
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2014-08-18 09:04:03
当您试图将customer对象和survey对象映射到标量值(作为整数)时，就会发生这种情况：
$builder->add('customer', 'hidden');
$builder->add('survey', 'hidden');若要避免此问题，请将此更改为：
$user = $builder->create('customer', 'hidden');
$user->addViewTransformer(new IdToObjectTransformer($entityManager, 'FQCN of User model'));
$survey = $builder->create('survey', 'hidden');
$survey->addViewTransformer(new IdToObjectTransformer($entityManager, 'FQCN of Survey model'));
$builder->add($user);
$builder->add($survey);IdToObjectTransformer类https://gist.github.com/korotovsky/eeedb6e5d8f6bd9dca38示例
有关数据转换器的更多信息，请阅读：transformers.html#model-and-view-transformers
在Symfony2中，这是非常强大的东西。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/25307775
复制相关文章
相似问题
腾讯云开发者
