如何禁用表单选择类型中的特定项目? [英] How to disable specific item in form choice type?
本文介绍了如何禁用表单选择类型中的特定项目?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个表单,其中包含数据库中实体的选择字段:
I have a form with choice field of entities from database:
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
));
}
此表单将生成复选框列表并将呈现为:
This form will produce the list of checkboxes and will be rendered as:
[ ] Category 1
[ ] Category 2
[ ] Category 3
我想按值禁用此列表中的某些项目,但我不知道应该在哪里拦截选择字段项目来执行此操作.
I want to disable some of the items by value in this list but I don't know where I should intercept choice field items to do that.
有人知道解决方案吗?
推荐答案
刚刚用 finishView
和 PRE_BIND
事件监听器处理了.
Just handled it with finishView
and PRE_BIND
event listener.
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
));
$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;
}
}
}
这篇关于如何禁用表单选择类型中的特定项目?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文