如何通过symfony2中的表单类获取表单域的值？

Question

我想知道如何通过symfony2中的表单类获取表单域的值。解释如下：

这是实体类的代码：

    <?php

namespace Ikproj\HomeBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * User
 *
 * @ORM\Table(name="user")
 * @ORM\Entity(repositoryClass="Ikproj\HomeBundle\Entity\UserRepository")
 */
class User
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id_user", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var string
     *
     * @ORM\Column(name="name", type="string", length=255)
     */
    private $name;

    /**
     * @var string
     *
     * @ORM\Column(name="username", type="string", length=255)
     */
    private $email;

    /**
     * @var string
     *
     * @ORM\Column(name="pseudo", type="string", length=255)
     */
    private $pseudo;

    /**
     * @var string
     *
     * @ORM\Column(name="password", type="string", length=255)
     */
    private $passWD;

    /**
     * @var string
     *
     * @ORM\Column(name="sexeuser", type="string", length=255)
     */
    private $sexeuser;

    /**
     * @var \DateTime
     *
     * @ORM\Column(name="dateanniv", type="date")
     */
    private $dateanniv;


    /**
     * Get id
     *
     * @return integer 
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set name
     *
     * @param string $name
     * @return User
     */
    public function setName($name)
    {
        $this->name = $name;

        return $this;
    }

    /**
     * Get name
     *
     * @return string 
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set email
     *
     * @param string $email
     * @return User
     */
    public function setEmail($email)
    {
        $this->email = $email;

        return $this;
    }

    /**
     * Get email
     *
     * @return string 
     */
    public function getEmail()
    {
        return $this->email;
    }

    /**
     * Set pseudo
     *
     * @param string $pseudo
     * @return User
     */
    public function setPseudo($pseudo)
    {
        $this->pseudo = $pseudo;

        return $this;
    }

    /**
     * Get pseudo
     *
     * @return string 
     */
    public function getPseudo()
    {
        return $this->pseudo;
    }

    /**
     * Set passWD
     *
     * @param string $passWD
     * @return User
     */
    public function setPassWD($passWD)
    {
        $this->passWD = $passWD;

        return $this;
    }

    /**
     * Get passWD
     *
     * @return string 
     */
    public function getPassWD()
    {
        return $this->passWD;
    }

    /**
     * Set sexeuser
     *
     * @param string $sexeuser
     * @return User
     */
    public function setSexeuser($sexeuser)
    {
        $this->sexeuser = $sexeuser;

        return $this;
    }

    /**
     * Get sexeuser
     *
     * @return string 
     */
    public function getSexeuser()
    {
        return $this->sexeuser;
    }

    /**
     * Set dateanniv
     *
     * @param \DateTime $dateanniv
     * @return User
     */
    public function setDateanniv($dateanniv)
    {
        $this->dateanniv = $dateanniv;

        return $this;
    }

    /**
     * Get dateanniv
     *
     * @return \DateTime 
     */
    public function getDateanniv()
    {
        return $this->dateanniv;
    }
}

这是表单类（表单构建器）的代码：

    <?php

namespace Ikproj\HomeBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class UserprofilechangeType extends AbstractType
{
     /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('sexeuser', 'text');
        $def = $builder->add('sexeuser', 'text');
    }

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Ikproj\HomeBundle\Entity\User'
        ));
    }

    /**
     * @return string
     */
    public function getName()
    {
        return 'ikproj_homebundle_user';
    }
}

其实我想知道的是如何把“sexeuser”字段的值放到变量$def里面。换句话说，我应该如何更改$def = $builder->add('sexeuser', 'text');这一行以获得sexeuser字段的值？

Answer 1

您需要使用表单事件动态修改表单：

在这种情况下，一切都发生在将数据加载到表单（PRE_SET_DATA）之前

// src/Acme/DemoBundle/Form/Type/FriendMessageFormType.php
namespace Acme\DemoBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Security\Core\SecurityContext;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class FriendMessageFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('subject', 'text')
            ->add('body', 'textarea');
        $builder->addEventListener(
            FormEvents::PRE_SET_DATA,
            function (FormEvent $event) {
                $data = $event->getData();
                var_dump($data);die;
            }
        );
    }

    public function getName()
    {
        return 'acme_friend_message';
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
    }
}

http://symfony.com/doc/current/cookbook/form/dynamic_form_modification.html