Php Symfony2保存嵌入集合表单

我在保存嵌入的集合表单字段时遇到问题。假设我有一个程序，这个程序有很多层次。在我的表单类型中：

ProgramType.php

<?php

namespace Eifl\AdminBundle\Form\Type;

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

class ProgramType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('id','text',array(
                'label'=>'Program Code',
            ))
            ->add('program','text',array(
                'label'=>'Program Name',
            ))
            ->add('levels','collection', array(
                'type'=>new LevelType(),
                'allow_add'=>true,
                'allow_delete'=>true,
                'by_reference' => false,
            ))
            ->add('save','submit', array(
                'label'=>'Save',
            ));
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Eifl\AdminBundle\Entity\Program',
        ));
    }

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

public function programAction(Request $request)
{
    $program = new Program();
    $level = new Level();

    $program->getLevels()->add($level);
    $newProgram = $this->createForm(new ProgramType(),$program);
    $newProgram->handleRequest($request);

    if($newProgram->isValid()){
        $em = $this->getDoctrine()->getManager();
        $em->persist($program);
        $em->flush();

        return $this->redirect($this->generateUrl('eifl_admin_program'));
    }
    return $this->render('EiflAdminBundle:Default:program.html.twig',array("new_program_form"=>$newProgram->createView()));
}

<?php

namespace Eifl\AdminBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * Program
 *
 * @ORM\Entity
 * @ORM\Table(name="tbl_program")
 */
Class Program
{
    /**
     * @ORM\Id
     * @ORM\Column(name="id", type="string")
     */
    protected $id;

    /**
     *@ORM\Column(name="program_name",type="string")
     */
    public $program;

    /**
     * @ORM\OneToMany(targetEntity="Eifl\AdminBundle\Entity\Level", mappedBy="program", cascade={"remove","persist"})
     */
    public $levels;

    public function __construct(){
        $this->levels = new ArrayCollection();
    }

    /**
     * @param string $id
     * @return string
     */
    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    /**
     * Add Level
     *
     * @param \Eifl\AdminBundle\Entity\Level $levels
     * @return Program
     */
    public function addLevels(\Eifl\AdminBundle\Entity\Level $level) {
        $this->levels[] = $level;
        $levels->setProgram($this);

        return $this;
    }

    /**
     * set levels
     *
     * @param \Doctrine\Common\Collections\ArrayCollection $levels
     * @return levels
     */
    public function setLevels(\Doctrine\Common\Collections\ArrayCollection $levels) {
        foreach ($levels as $level) {
            $level->setProgram($this);
        }
        $this->levels = $levels;
    }

    public function removeLevels(\Eifl\AdminBundle\Entity\Level $level)
    {
        $this->levels->removeElement($level);
    }

    /**
     * @param string $program
     * @return string
     */
    public function setProgram($program)
    {
        $this->program = $program;

        return $this;
    }

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

    /**
     * @return string
     */
    public function getProgram()
    {
       return $this->program;
    }

    /**
     * @return string
     */
    public function getLevels()
    {
       return $this->levels;
    }
}

<?php

namespace Eifl\AdminBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Level
 *
 * @ORM\Entity
 * @ORM\Table(name="tbl_level")
 */
Class Level
{
    /**
     * @ORM\Id
     * @ORM\Column(name="id", type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     *@ORM\Column(name="level",type="string")
     */
    public $level;

    /**
     * @ORM\ManyToOne(targetEntity="Eifl\AdminBundle\Entity\Program", inversedBy="levels")
     * @ORM\JoinColumn(name="program", referencedColumnName="id")
     */
    public $program;

    /**
     * @param string $id
     * @return string
     */
    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    /**
     * @param string $level
     * @return string
     */
    public function setLevel($level)
    {
        $this->level = $level;

        return $this;
    }

    /**
     * @param mixed $program
     * @return string
     */
    public function setProgram(\Eifl\AdminBundle\Entity\Program $program)
    {
        $this->program = $program;

        return $this;
    }

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

    /**
     * @return string
     */
    public function getLevel()
    {
        return $this->level;
    }

    /**
     * @return string
     */
    public function getProgram()
    {
        return $this->program;
    }
}

更新

这是我的实体类

Program.php

<?php

namespace Eifl\AdminBundle\Form\Type;

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

class ProgramType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('id','text',array(
                'label'=>'Program Code',
            ))
            ->add('program','text',array(
                'label'=>'Program Name',
            ))
            ->add('levels','collection', array(
                'type'=>new LevelType(),
                'allow_add'=>true,
                'allow_delete'=>true,
                'by_reference' => false,
            ))
            ->add('save','submit', array(
                'label'=>'Save',
            ));
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'Eifl\AdminBundle\Entity\Program',
        ));
    }

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

public function programAction(Request $request)
{
    $program = new Program();
    $level = new Level();

    $program->getLevels()->add($level);
    $newProgram = $this->createForm(new ProgramType(),$program);
    $newProgram->handleRequest($request);

    if($newProgram->isValid()){
        $em = $this->getDoctrine()->getManager();
        $em->persist($program);
        $em->flush();

        return $this->redirect($this->generateUrl('eifl_admin_program'));
    }
    return $this->render('EiflAdminBundle:Default:program.html.twig',array("new_program_form"=>$newProgram->createView()));
}

<?php

namespace Eifl\AdminBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * Program
 *
 * @ORM\Entity
 * @ORM\Table(name="tbl_program")
 */
Class Program
{
    /**
     * @ORM\Id
     * @ORM\Column(name="id", type="string")
     */
    protected $id;

    /**
     *@ORM\Column(name="program_name",type="string")
     */
    public $program;

    /**
     * @ORM\OneToMany(targetEntity="Eifl\AdminBundle\Entity\Level", mappedBy="program", cascade={"remove","persist"})
     */
    public $levels;

    public function __construct(){
        $this->levels = new ArrayCollection();
    }

    /**
     * @param string $id
     * @return string
     */
    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    /**
     * Add Level
     *
     * @param \Eifl\AdminBundle\Entity\Level $levels
     * @return Program
     */
    public function addLevels(\Eifl\AdminBundle\Entity\Level $level) {
        $this->levels[] = $level;
        $levels->setProgram($this);

        return $this;
    }

    /**
     * set levels
     *
     * @param \Doctrine\Common\Collections\ArrayCollection $levels
     * @return levels
     */
    public function setLevels(\Doctrine\Common\Collections\ArrayCollection $levels) {
        foreach ($levels as $level) {
            $level->setProgram($this);
        }
        $this->levels = $levels;
    }

    public function removeLevels(\Eifl\AdminBundle\Entity\Level $level)
    {
        $this->levels->removeElement($level);
    }

    /**
     * @param string $program
     * @return string
     */
    public function setProgram($program)
    {
        $this->program = $program;

        return $this;
    }

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

    /**
     * @return string
     */
    public function getProgram()
    {
       return $this->program;
    }

    /**
     * @return string
     */
    public function getLevels()
    {
       return $this->levels;
    }
}

<?php

namespace Eifl\AdminBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Level
 *
 * @ORM\Entity
 * @ORM\Table(name="tbl_level")
 */
Class Level
{
    /**
     * @ORM\Id
     * @ORM\Column(name="id", type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     *@ORM\Column(name="level",type="string")
     */
    public $level;

    /**
     * @ORM\ManyToOne(targetEntity="Eifl\AdminBundle\Entity\Program", inversedBy="levels")
     * @ORM\JoinColumn(name="program", referencedColumnName="id")
     */
    public $program;

    /**
     * @param string $id
     * @return string
     */
    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    /**
     * @param string $level
     * @return string
     */
    public function setLevel($level)
    {
        $this->level = $level;

        return $this;
    }

    /**
     * @param mixed $program
     * @return string
     */
    public function setProgram(\Eifl\AdminBundle\Entity\Program $program)
    {
        $this->program = $program;

        return $this;
    }

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

    /**
     * @return string
     */
    public function getLevel()
    {
        return $this->level;
    }

    /**
     * @return string
     */
    public function getProgram()
    {
        return $this->program;
    }
}

---

检查是否将addLevel和setLevel放入程序实体中

     /**
     * Add Level
     *
     * @param \Eifl\AdminBundle\Entity\Level $levels
     * @return Program
     */
    public function addLevel(\Eifl\AdminBundle\Entity\Level $levels) {
        $this->levels[] = $levles;

        $level->setProgram($this);

        return $this;
    }

    /**
     * set levels
     *
     * @param \Doctrine\Common\Collections\ArrayCollection $levels
     * @return levels
     */
    public function setLevels(\Doctrine\Common\Collections\ArrayCollection $levels) {
        foreach ($levles as $level) {
            $level->setPogram($this);
        }
        $this->levels = $levels;
    }

从控制器中删除此代码

 $level = new Level();

    $program->getLevels()->add($level);

实体程序中的getter和setter$级别混淆

制作：

public function addLevel(Level $level) { //without s
  $this->levels[] = $level;
}
public function removeLevel(Level $level) //without s
{
    $this->levels->removeElement($level);  
}
public function getLevels()
{
   return $this->levels;
}

删除其他
public function setLevels、public function removeLevels等

正如Adene Choubi所说，
$program->getLevels（）->add（$level）也没有意义

我不知道这是不是唯一的麻烦，但从那开始。
这对我有点帮助。我已经声明了
addLevels
函数，但是我忘了在我的
程序
实体中声明
setLevels
函数。这有助于我保存与级别相关的程序名称。还有同样的问题，只保存第一个和最后一个级别，只保存在数据库中的两个级别。然后检查是否在级别类中声明setProgram方法检查我的更新。我已经声明了该方法。仍然不能接收超过2个级别。我是否需要做一个循环并检查有多少层形成了一个有值的字段？如果我必须这样做，我应该在哪里添加循环条件呢？你可以在setLevel中添加一个计数器，或者用count（$form->getData（）->getLevel（））签入你的控制器，也许我在构建表单时犯了错误，因为当我
count（$form->getData（）->getLevel（））
时，它返回
2
。我希望返回
3
。如果我删除这些代码，我只能保存1级。也许我必须做一个循环，但我无法从字段中获得级别数。