Php 在表单侦听器中修改查询生成器
我创建了如下自定义类型:Php 在表单侦听器中修改查询生成器,php,symfony,symfony-3.4,Php,Symfony,Symfony 3.4,我创建了如下自定义类型: private $selectedCountryId = 0; public function configureOptions(OptionsResolver $resolver) { $queryBuilder = function (CountryRepository $er) { return $er->createQueryBuilder('c') ->where('c.active = 1')
private $selectedCountryId = 0;
public function configureOptions(OptionsResolver $resolver)
{
$queryBuilder = function (CountryRepository $er) {
return $er->createQueryBuilder('c')
->where('c.active = 1')
->orWhere('c.id = :sid')
->orderBy('c.ord', 'ASC')
->addOrderBy('c.name', 'ASC')
->setParameter('sid', $this->selectedCountryId)
;
};
$resolver->setDefaults(array(
'query_builder' => $queryBuilder,
'class' => Country::class,
));
}
public function getParent()
{
return EntityType::class;
}
public function getBlockPrefix()
{
return 'CountryType';
}
我试图做的是根据实体的实例修改selectedCountryId参数:
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(
FormEvents::PRE_SET_DATA, array($this, 'onPreSetData')
);
}
public function onPreSetData(FormEvent $event)
{
if ($event->getData() instanceof Country) {
$this->selectedCountryId = $event->getData()->getId();
}
}
但是在这个阶段已经调用了setOptions,我不知道如何在这里修改查询生成器。
一般来说,我试图实现的是,如果给定的国家/地区已针对给定的实体存储(并在以后取消激活),则允许在下拉列表中显示该国家/地区。在这种情况下,您仍然有机会在
PRE\u SET\u DATA
事件中修改查询生成器,因为只有在创建表单视图后才会生成选项列表
这应该可以做到:
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
if (null !== $country = $event->getData()) {
// at this point the option is already resolved
// so it'll return the QueryBuilder instance
$qb = $event->getForm()->getConfig()->getOption('query_builder');
$qb->orWhere('c = :country')->setParameter('country', $country);
}
});
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'class' => Country::class,
'query_builder' => function (CountryRepository $r) {
return $r->createQueryBuilder('c')
->where('c.active = 1')
->orderBy('c.ord', 'ASC')
->addOrderBy('c.name', 'ASC')
;
},
]);
}
它只适用于对象的实例。您可以控制父窗体吗?您可以通过此自定义类型的选项传递所选国家/地区吗?我可以,但关键是在这里这样做-我不想对所有使用此类型的表单使用相同的逻辑。但如果那不可能的话,我必须这么做。