表单 – Symfony2：将基于表继承结构的集合添加到FormView

我正在使用Symfony2 / Doctrine应用程序,它使用类表继承(http://docs.doctrine-project.org/en/2.0.x/reference/inheritance-mapping.html#class-table-inheritance)在咨询中管理投诉.每个咨询都可以有很多投诉(OnetoMany),每种不同类型的投诉都有不同的结构和外观.投诉是一个集合,并且使用JS动态添加.

在这一点上,我可以坚持投诉,并将它们连接到Consults,在持久化之前将其重新刻录为Controller中的适当类型.我遇到了一些问题,我正在计划将其迁移到表单事件(http://symfony.com/doc/current/cookbook/form/dynamic_form_generation.html)或其他某种方面来简化流程.

然而,在这一点上我遇到的问题是,我无法使用FormView在视图中显示现有的投诉,因为表单构建器要求我设置要显示的集合的类型.如果每个Consult只有一种类型的投诉,那将会很好,但是它们可以有多种类型,并且将表单构建器中的类型设置为将该类型限制为该类型.

有没有一些方法可以采取阻止FormView从tyring转换为字符串,没有类型或某种方式来动态检测和分配每个投诉的类型(使用$complaint-> getComplaintType(),也许)？

<?PHP
namespace Acme\ConsultBundle\Entity;
class Consult
{
    /**
     * @ORM\OnetoMany(targetEntity="Acme\ConsultBundle\Entity\ComplaintBase",mappedBy="consult",cascade={"persist","remove"})
     */
    protected $complaints;
}
?>


<?PHP
namespace Acme\ConsultBundle\Entity;
/**
 * Acme\ConsultBundle\Entity\ConsultBase
 *
 * @ORM\Entity
 * @ORM\Table(name="ConsultComplaintBase")
 * @ORM\HasLifecycleCallbacks
 * @ORM\InheritanceType("JOINED")
 * @ORM\discriminatorColumn(name="complaint_name",type="string")
 * @ORM\discriminatorMap({
 *  "ComplaintDefault"      = "Acme\ConsultBundle\Entity\ComplaintDefault",*  "ComplaintRosacea"      = "Acme\ConsultBundle\Entity\ComplaintRosacea",*  "ComplaintBotox"        = "Acme\ConsultBundle\Entity\ComplaintBotox",*  "ComplaintAcne"         = "Acme\ConsultBundle\Entity\ComplaintAcne",*  "ComplaintUrticaria"    = "Acme\ConsultBundle\Entity\ComplaintUrticaria",* })
 */
abstract class ComplaintBase
{
    /**
     * @ORM\ManyToOne(targetEntity="Acme\ConsultBundle\Entity\Consult",inversedBy="complaints")
     * @ORM\JoinColumn(name="consult_id",referencedColumnName="id")
     */
    protected $consult;
    /**
     * @ORM\Column(type="string",length="255")
     */
    protected $complaintType;
}
?>


<?PHP
namespace Acme\ConsultBundle\Form\Type;
class ConsultType extends AbstractType
{
    public function buildForm(FormBuilder $builder,array $options)
    {
        $builder
            ->add('complaints','collection',array(
                // 'type' => new ComplaintUrticariaType(),'error_bubbling' => true,'allow_add' => true,'allow_delete' => true,'by_reference' => false,));
    }
}
?>

解决方法

不完全确定它可以与集合一起使用,但它肯定与单个表单一起使用.请尝试这个想法.

首先为您的基本实体投诉基础做一个表单

class ComplaintForm extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder,array $options)
    {
        $subscriber = new ComplaintSubscriber($builder);
        $builder->addEventSubscriber($subscriber);

        /* your fields */ 
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Acme\ConsultBundle\Entity\ComplaintBase',));
    }
}

然后在订户中,您可以根据提交的实体类型定义其他字段.

class ComplaintSubscriber implements EventSubscriberInterface
{
    private $factory;
    private $builder;

    public function __construct(FormBuilderInterface $builder)
    {
        $this->factory = $builder->getFormFactory();
        $this->builder = $builder;
    }

    public static function getSubscribedEvents()
    {
        return array(
            FormEvents::PRE_SET_DATA => 'preSetData',);
    }

    public function preSetData(FormEvent $event)
    {
        $data = $event->getData();
        $form = $event->getForm();

        if (null === $data) {
            return;
        }

        $class = get_class($data);
        if( $class === 'Acme\ConsultBundle\Entity\ComplaintDefault' ) {
            $this->processDefault($data,$form);
        }
        elseif( $class === 'Acme\ConsultBundle\Entity\ComplaintRosacea' ) {
            $this->processRosacea($data,$form);
        }
        elseif( $class === 'Acme\ConsultBundle\Entity\ComplaintBotox' ) {
            $this->processBotox($data,$form);
        }
        else {
            #nop
        }
    }

    protected function processDefault(Entity\ComplaintDefault $node,FormInterface &$form)
    {
        #nop
    }

    protected function processRosacea(Entity\ComplaintRosacea $node,FormInterface &$form)
    {
        $form->add($this->factory->createNamed('some_field','text'));
    }

    protected function processBotox(Entity\ComplaintBotox $node,FormInterface &$form)
    {
        $form->add($this->factory->createNamed('other_field','text'));
    }
}