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嗨，我无法理解如何添加/删除表单域依赖于我的形式选择的值。Symfony2表格动态添加删除元素
我有一个名为ContestType formType：
我想要做的是显示/隐藏其他依赖于contestStyle的价值形式输入。
ContestStyle是一个实体，它有两个值：
- 0 - >头对头
- 1 - >联赛
如果选择（0）对塞我想有一个隐藏的表单域，playerCount的值设置为2
如果选择了Leauge（1），我想删除隐藏的字段并改为显示带有选项的选择。
它实际上比这更复杂，但让我的头部轮到这应该让我去。
class ContestType extends AbstractType
{
protected $em;
public function __construct(EntityManager $em)
{
$this->em = $em;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(
array('data_class' => 'GameBundle\Entity\Contest')
);
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('scheduleGroup', 'entity', array(
'class' => 'GameBundle:ScheduleGroup',
'property' => 'name',
'label' => 'Date',
'placeholder' => 'Select Date',
))
->add('contestStyle', 'entity', array(
'class' => 'GameBundle:ContestStyle',
'property' => 'name',
'label' => 'Contest Style',
'placeholder' => 'Select Contest Style',
))
->add('playerCount', 'hidden', array(
'data' => '2',
))
->getForm();
$builder->addEventListener(
FormEvents::POST_SET_DATA,
function (FormEvent $event) {
$form = $event->getForm();
$data = $event->getData();
$contestStyle = $data->getContestStyle();
$playerCountOptions = array(
3 => '3 Players',
4 => '4 Players',
5 => '5 Players',
6 => '6 Players',
7 => '7 Players',
8 => '8 Players',
9 => '9 Players',
10 => '10 Players',
11 => '11 Players',
12 => '12 Players',
13 => '13 Players',
14 => '14 Players',
15 => '15 Players',
16 => '16 Players',
17 => '17 Players',
18 => '18 Players',
19 => '19 Players',
20 => '20 Players',
);
$list = null === $contestStyle ? array() : $playerCountOptions;
//var_dump($data);die();
if($contestStyle >1){
$form->remove('playerCount');
$form->add('playerCount', 'choice', array(
'choices' => $list
));
}
}
);
}
public function getName()
{
return 'contest';
}
}
我收到一条错误注意：类学说\ COMMON \收藏\ ArrayCollection中的对象无法转换成int
我如何得到contestStyle字段的值？
这里是相关实体：
class Contest
{
public function __construct()
{
$this->scheduleGroup = new ArrayCollection();
$this->contestStyle = new ArrayCollection();
$this->entryFee = new ArrayCollection();
$this->payoutStructure = new ArrayCollection();
}
/**
* @var integer
*
* @ORM\Column(name="contestID", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $contestID;
/**
* @ORM\OneToOne(targetEntity="FantasyPro\GameBundle\Entity\ScheduleGroup")
* @Assert\Valid()
*/
private $scheduleGroup;
/**
*
* @ORM\OneToOne(targetEntity="FantasyPro\GameBundle\Entity\ContestStyle")
* @Assert\Valid()
*/
private $contestStyle;
/**
* @var integer
*
* @ORM\Column(name="playerCount", type="integer", nullable=false)
* @Assert\NotBlank()
*/
private $playerCount;
/**
* @ORM\OneToOne(targetEntity="FantasyPro\GameBundle\Entity\EntryFee")
* @Assert\Valid()
*/
private $entryFee;
/**
* @var string
*
* @ORM\OneToOne(targetEntity="FantasyPro\GameBundle\Entity\PayoutStructure")
*/
private $payoutStructure;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=255, nullable=true)
*/
private $name;
/**
* @var string
*
* @ORM\Column(name="opponent", type="string", length=255, nullable=false)
*
*/
private $playerScope;
/**
* Get contestID
*
* @return integer
*/
public function getContestID()
{
return $this->contestID;
}
public function getScheduleGroup()
{
return $this->scheduleGroup;
}
/**
* @param ScheduleGroup $scheduleGroup
*/
public function setScheduleGroup(ScheduleGroup $scheduleGroup = null){
$this->scheduleGroup = $scheduleGroup;
}
public function getContestStyle()
{
return $this->contestStyle;
}
/**
* @param ContestStyle $contestStyle
*/
public function setContestStyle(ContestStyle $contestStyle = null)
{
$this->contestStyle = $contestStyle;
}
/**
* @return int
*/
public function getPlayerCount()
{
return $this->playerCount;
}
/**
* @param int $playerCount
*/
public function setPlayerCount($playerCount)
{
$this->playerCount = $playerCount;
}
public function getEntryFee()
{
return $this->entryFee;
}
public function setEntryFee(EntryFee $entryFee = null)
{
$this->entryFee = $entryFee;
}
/**
* @return string
*/
public function getPayoutStructure()
{
return $this->payoutStructure;
}
/**
* @param string $payoutStructure
*/
public function setPayoutStructure($payoutStructure)
{
$this->payoutStructure = $payoutStructure;
}
/**
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* @param string $name
*/
public function setName($name)
{
$this->name = $name;
}
/**
* @return string
*/
public function getPlayerScope()
{
return $this->playerScope;
}
/**
* @param string $playerScope
*/
public function setPlayerScope($playerScope)
{
$this->playerScope = $playerScope;
}
}
ContestStyle：
class ContestStyle
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=100)
*/
private $name;
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set name
*
* @param string $name
*
* @return ContestStyle
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get name
*
* @return string
*/
public function getName()
{
return $this->name;
}
}