我尝试从AbstractType扩展的FormType访问服务。我怎么能这样做?
谢谢!
答案 0 :(得分:5)
作为基于之前答案/评论的完整答案:
要从您的表单类型访问服务,您必须:
1)Define your Form Type as a service并将所需的服务注入其中:
# src/AppBundle/Resources/config/services.yml
services:
app.my.form.type:
class: AppBundle\Form\MyFormType # this is your form type class
arguments:
- '@my.service' # this is the ID of the service you want to inject
tags:
- { name: form.type }
2)现在在表单类型类中,将其注入构造函数:
// src/AppBundle/Form/MyFormType.php
class MyFormType extends AbstractType
{
protected $myService;
public function __construct(MyServiceClass $myService)
{
$this->myService = $myService;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$this->myService->someMethod();
// ...
}
}
答案 1 :(得分:4)
只需通过构造函数将您想要的服务注入表单类型。
class FooType extends AbstractType
{
protected $barService;
public function __construct(BarService $barService)
{
$this->barService = $barService;
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$this->barService->doSomething();
// (...)
}
}
答案 2 :(得分:3)
查看this page in the sympfony docs,了解如何将表单类型声明为服务。该页面有很多很好的文档和示例。
Cyprian走在正确的轨道上,但链接页面更进一步,将表单类型创建为服务并让DI容器自动注入服务。