我解释了我的问题：
我必须创建一个表格，其中下拉列表根据我们的选择填写。
我有两个实体：
一个地区可能有多个城市（许多人）关系。
我遵循了此处的文档，如何使用表单事件（提交表单的动态生成）动态修改表单。
。这是实体的代码：
区域实体：
class Region
{
/**
* @var int
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORMColumn(name="nom", type="string", length=255)
*/
private $nom;
/**
* @var int
*
* @ORMColumn(name="numero", type="smallint")
*/
private $numero;
}
维尔实体：
class Ville
{
/**
* @var int
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORMColumn(name="nom", type="string", length=255)
*/
private $nom;
/**
* @var int
*
* @ORMColumn(name="numero", type="smallint")
*/
private $numero;
/**
* @var int
*
* @ORMColumn(name="codePostal", type="smallint")
*/
private $codePostal;
/**
* @var Region
*
* @ORMManyToOne(targetEntity="GECandidatBundleEntityRegion")
*/
protected $region;
}
我的问题：
我使用QUERY_BUILDER选项检索区域列表，但如何根据区域选择。
检索城市列表AnnonCetype：
$builder
->add('region', EntityType::class, [
'label' => 'Region *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
'class' => 'GECandidatBundle:Region',
'choice_label' => 'nom',
'multiple' => false,
'query_builder' => function(RegionRepository $repository) {
return $repository->getListeRegion();
}
])
->add('ville', TextType::class, [
'label' => 'Ville *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
]);
$formModifier = function (FormInterface $form, Region $region = null) {
$ville = null === $region ? array() : $region->getNom();
$form->add('ville', EntityType::class, array(
'class' => 'GECandidatBundle:Ville',
'placeholder' => '',
'choices' => $ville,
'label' => 'Ville *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
'choice_label' => 'nom',
'multiple' => false,
/*'query_builder' => function(VilleRepository $repository) {
return $repository->getVilleByRegion();
}*/
));
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($formModifier) {
$data = $event->getData();
$formModifier($event->getForm(), $data->getVille());
}
);
$builder->get('region')->addEventListener(
FormEvents::POST_SUBMIT,
function (FormEvent $event) use ($formModifier) {
$region = $event->getForm()->getData();
$formModifier($event->getForm()->getParent(), $region);
}
);
new.html.twig：
{{ form_start(form) }}
{{ form_row(form.region) }} {# <select id="ge_candidatbundle_annonce_region" ... #}
{{ form_row(form.ville) }} {# <select id="ge_candidatbundle_annonce_ville" ... #}
{# ... #}
{{ form_end(form) }}
<script>
var $region = $('#ge_candidatbundle_annonce_region');
$region.change(function() {
var $form = $(this).closest('form');
var data = {};
data[$region.attr('nom')] = $region.val();
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
$('#ge_candidatbundle_annonce_ville').replaceWith(
$(html).find('#ge_candidatbundle_annonce_ville')
);
}
});
});
</script>
update
-
我修改了实体。
-
我修改了AnnonCetype。
-
我修改了new.html.twig。
这是实体的代码：
区域实体：
class Region
{
/**
* @var int
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORMColumn(name="nom", type="string", length=255)
*/
private $nom;
/**
* @var int
*
* @ORMColumn(name="numero", type="smallint")
*/
private $numero;
/**
* @ORMOneToMany(targetEntity="GECandidatBundleEntityVille", mappedBy="region")
**/
protected $villes;
/**
* Get villes
*
* @return DoctrineCommonCollectionsCollection
*/
public function getVilles()
{
return $this->villes;
}
}
维尔实体：
class Ville
{
/**
* @var int
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORMColumn(name="nom", type="string", length=255)
*/
private $nom;
/**
* @var int
*
* @ORMColumn(name="numero", type="smallint")
*/
private $numero;
/**
* @var int
*
* @ORMColumn(name="codePostal", type="smallint")
*/
private $codePostal;
/**
* @var Region
* @ORMManyToOne(targetEntity="GECandidatBundleEntityRegion", inversedBy="villes")
*/
protected $region;
}
AnnonCetype：
$builder
->add('region', EntityType::class, [
'label' => 'Region *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
'class' => 'GECandidatBundle:Region',
'choice_label' => 'nom',
'multiple' => false,
'query_builder' => function(RegionRepository $repository) {
return $repository->getListeRegion();
}
])
->add('ville');
$formModifier = function (FormInterface $form, Region $region = null) {
$villes = null === $region ? array() : $region->getVilles();
$form->add('ville', EntityType::class, array(
'class' => 'GECandidatBundle:Ville',
'placeholder' => '',
'choices' => $villes,
'label' => 'Ville *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
'choice_label' => 'nom',
'multiple' => false,
));
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($formModifier) {
$data = $event->getData();
$formModifier($event->getForm(), $data->getVille());
}
);
$builder->get('region')->addEventListener(
FormEvents::POST_SUBMIT,
function (FormEvent $event) use ($formModifier) {
$region = $event->getForm()->getData();
$formModifier($event->getForm()->getParent(), $region);
}
);
new.html.twig：
{{ form_start(form) }}
{{ form_row(form.region) }} {# <select id="ge_candidatbundle_annonce_region" ... #}
{{ form_row(form.ville) }} {# <select id="ge_candidatbundle_annonce_ville" ... #}
{# ... #}
{{ form_end(form) }}
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
var $region = $('#ge_candidatbundle_annonce_region');
$region.change(function() {
var $form = $(this).closest('form');
var data = {};
data[$region.attr('name')] = $region.val();
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
$('#ge_candidatbundle_annonce_ville').replaceWith(
$(html).find('#ge_candidatbundle_annonce_ville')
);
}
});
});
</script>
许多解决方案：
更简单的是将villes添加到您的Region实体并做类似的事情：
class Region
{
/**
* @var int
*
* @ORMColumn(name="id", type="integer")
* @ORMId
* @ORMGeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORMColumn(name="nom", type="string", length=255)
*/
private $nom;
/**
* @var int
*
* @ORMColumn(name="numero", type="smallint")
*/
private $numero;
/** @ORMOneToMany(targetEntity="Ville", inversedBy="region") **/
protected $villes;
public function getVilles()
{
return $this->villes;
}
public function setVilles($villes)
{
$this->villes = $villes;
return $this;
}
// [... + get/setVilles functions ...]
}
和您的类型：
$formModifier = function (FormInterface $form, Region $region = null) {
$villes = null === $region ? array() : $region->getVilles();
$form->add('ville', EntityType::class, array(
'class' => 'GECandidatBundle:Ville',
'placeholder' => '',
'choices' => $villes,
'label' => 'Ville *',
'label_attr' => [
"class" => "smaller lighter blue",
"style" => "font-size: 21px;",
],
'choice_label' => 'nom',
'multiple' => false,
/*'query_builder' => function(VilleRepository $repository) {
return $repository->getVilleByRegion();
}*/
));
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($formModifier) {
$data = $event->getData();
$formModifier($event->getForm(), $data->getVille());
}
);
$builder->get('region')->addEventListener(
FormEvents::POST_SUBMIT,
function (FormEvent $event) use ($formModifier) {
$region = $event->getForm()->getData();
$formModifier($event->getForm()->getParent(), $region);
}
);
第二个选项：
通过参数传递 region entity
VilleRepository中实现您的CC_3update
您使用非现有属性nom设置AJAX数据，替换您的JavaScript代码：
<script>
var $region = $('#ge_candidatbundle_annonce_region');
$region.change(function() {
var $form = $(this).closest('form');
var data = {};
data[$region.attr('name')] = $region.val();
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
$('#ge_candidatbundle_annonce_ville').replaceWith(
$(html).find('#ge_candidatbundle_annonce_ville')
);
}
});
});
</script>