您好我无法了解如何根据表单中的选择值添加/删除表单字段。
我有一个名为ContestType的formType：
我想要做的是显示/隐藏其他表单输入，具体取决于contestStyle的值。
ContestStyle是一个有两个值的实体：
如果选择了（0）Head to Head，我希望有一个隐藏的表单字段，playerCount，其值设置为2
如果选择Leauge（1），我想删除隐藏字段并显示带选项的选择。
它实际上比这更复杂，但是我的头脑应该让我走了。
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';
}
}
我收到错误提示：类Doctrine \ Common \ Collections \ ArrayCollection的对象无法转换为int
我如何获得contestStyle字段的值？
以下是相关实体：
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;
}
}
答案 0 :(得分：1)
处理程序错误，您需要使用SUBMIT作为事件处理程序：
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::SUBMIT,
function (FormEvent $event) {
$form = $event->getForm();
$data = $event->getData();
$contestStyle = $data->getContestStyle()->getID();;
$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() : $playerCountOptions;
if($contestStyle >1){
$form->remove('playerCount');
$form->add('playerCount', 'choice', array(
'choices' => $list
));
}
}
);
}
public function getName()
{
return 'contest';
}
}