在Symfony2.7中,我可以在创建表单时直接从控制器将参数传递给Form Type构造函数,但是在Symfony3中我无法做到!
之前在Symfony2.7中
$form = $this->createForm(new NewsType("posted_by_name"));
在Symfony3之后
$form = $this->createForm(NewsType::class); // no idea how to pass parameter?
更新 我也希望从以下网址访问它:
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
// how to access posted_by_name here which is sent from controller
}
任何帮助都将受到高度赞赏..
答案 0 :(得分:42)
感谢您的时间!我自己解决了这个问题:
我从NewsType构造函数中删除了参数,并使用$ options数组将数据添加到了postedBy表单字段,并将数据从控制器传递给$ options数组,请检查以下内容:
<强> NewsType 强>
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('postedBy', HiddenType::class, array(
'data' => $options['postedBy']
)
)
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'postedBy' => null,
));
}
<强>控制器强>
$form = $this->createForm(NewsType::class, $news, array(
'postedBy' => $this->getUser()->getFullname(),
);
<强>更新强> 如果要从addEventListener访问$ options数组,请使用下面的代码:
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
$postedBy = $event->getForm()->getConfig()->getOptions()['postedBy'];
}
希望它有所帮助!
答案 1 :(得分:11)
您需要定义form as service。
namespace AppBundle\Form\Type;
use App\Utility\MyCustomService;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
class NewsType extends AbstractType
{
private $myCustomService;
private $myStringParameter;
public function __construct(MyCustomService $service, $stringParameter)
{
$this->myCustomService = $service;
$this->myStringParameter = $stringParameter;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
// Your code
}
}
添加到您的服务配置:
#src/AppBundle/Resources/config/services.yml
services:
app.form.type.task:
class: AppBundle\Form\Type\NewsType
arguments:
- "@app.my_service"
- "posted_by_name"
tags:
- { name: form.type }
答案 2 :(得分:8)
@Muzafar和@jkucharovic,问题是何时使用......
正如Bernard Schussek在Symfony Forms 101中所示:
1 不要将动态数据传递给构造函数..
2 ...但请使用自定义选项
3 将全局设置传递给构造函数(或服务)