Php Symfony 2创建动态表单

我想创建一个表单，允许用户订阅/取消订阅存储在数据库中的各种主题。基本上，所有可用的主题都是存储的，需要通过复选框输出，以便用户可以从他们的配置文件中添加/删除该主题。我用香草PHP很容易做到这一点，但我对Symfony2是新手。这是我到目前为止所拥有的

我想我已经正确地创建了表单，但是我不确定如何在这里编写控制器。这只是一个小测试，看看如何做，在本例中，保存主题的col称为options。任何帮助都将不胜感激。提前谢谢你

简而言之，我需要将选项栏中的所有VAL列为复选框列表

FormCheck.php

<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * FormCheck
 *
 * @ORM\Table()
 * @ORM\Entity
 */
class FormCheck
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

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


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

    /**
     * Set options
     *
     * @param string $options
     * @return FormCheck
     */
    public function setOptions($options)
    {
        $this->options = $options;

        return $this;
    }

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

<?php

namespace AppBundle\Form;

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

class FormCheckType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('item', 'entity', array(
            'class'    => 'AppBundle:FormCheck',
            'property' => 'options',
            'expanded' => true,
            'multiple' => true,
        ));
    }

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

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

<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;

class FormCheckController extends Controller
{
    /**
     * @Route("/form")
     * @Template()
     */
    public function formAction()
    {
        return $this->render('default/formCheck.html.twig');
    }

}

首先，你应该仔细阅读，里面几乎涵盖了你需要的所有内容

您最好使用一个用户实体和一个主题实体来存储您的主题，并通过多对多关系将它们连接起来

通过这种方式，您可以添加/删除主题&您的表单将更新，并且每个用户的选项字符串中不会有重复的信息

例如（我根本没有检查语法，可能有拼写错误，但这是我在你的情况下所做的一般要点）

使用者

话题

形式

控制器

class FormCheckController extends Controller
{
    /**
     * @Route("/form")
     * @Template()
     */
    public function formAction(Request $request)
    {
        $user = // however you get your user here

        $form = $this->createForm(new UserTopicType(), $user);
        $formView = $form->createView();

        $form->handleRequest($request); // request 

        if ($form->isValid()) {

          // persist, flush your user here and redirect to your form
          // or whatever you want to do
        }

        $parameters = array(
            'form' => $formView,
        );

    return $this->render('default/formCheck.html.twig', $parameters);
    }
}

谢谢我来试试这个。
/**
 * @ORM\ManyToMany(targetEntity="YourNamespace\YourBundle\Entity\User", inversedBy="topics")
 * @ORM\JoinTable(name="user_topic",
 *      joinColumns={@ORM\JoinColumn(name="user_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="topic_id", referencedColumnName="id")}
 *      )
 */
protected $users;

class UserTopicType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('topics', 'entity', array(
            'class'    => 'AppBundle:Topic',
            'property' => 'topics',
            'expanded' => true,
            'multiple' => true,
        ));
    }

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

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

class FormCheckController extends Controller
{
    /**
     * @Route("/form")
     * @Template()
     */
    public function formAction(Request $request)
    {
        $user = // however you get your user here

        $form = $this->createForm(new UserTopicType(), $user);
        $formView = $form->createView();

        $form->handleRequest($request); // request 

        if ($form->isValid()) {

          // persist, flush your user here and redirect to your form
          // or whatever you want to do
        }

        $parameters = array(
            'form' => $formView,
        );

    return $this->render('default/formCheck.html.twig', $parameters);
    }
}