我有一个表单与数据库中的实体的选择字段：
public function buildForm(FormBuilderInterface $builder,array $options)
{
$builder->add('categories','document',array(
'class' => 'Acme\DemoBundle\Document\Category','property' => 'name','multiple' => true,'expanded' => true,'empty_value' => false
));
}
[ ] Category 1 [ ] Category 2 [ ] Category 3
解决方法
只需用finishView和PRE_BIND事件侦听器处理它.
public function buildForm(FormBuilderInterface $builder,'empty_value' => false
));
$builder->addEventListener(FormEvents::PRE_BIND,function (FormEvent $event) {
if (!$ids = $this->getNonEmptyCategoryIds()) {
return;
}
$data = $event->getData();
if (!isset($data['categories'])) {
$data['categories'] = $ids;
} else {
$data['categories'] = array_unique(array_merge($data['categories'],$ids));
}
$event->setData($data);
});
}
...
public function finishView(FormView $view,FormInterface $form,array $options)
{
if (!$ids = $this->getNonEmptyCategoryIds()) {
return;
}
foreach ($view->children['categories']->children as $category) {
if (in_array($category->vars['value'],$ids,true)) {
$category->vars['attr']['disabled'] = 'disabled';
$category->vars['checked'] = true;
}
}
}
