我如何在 Symfony2 的 Form Builder 类中访问用户角色 [英] How can i access the user Role in Form Builder class in Symfony2

问题描述

我的表单为 UserType 和这样的字段

I have the form as UserType with field like this

->add('description')
  ->add('createdAt')

现在我希望如果登录用户具有角色 (ROLE_SUPERADMIN) 那么他可以看到这样的额外字段

Now i want that if the Logged in user has Role (ROLE_SUPERADMIN) then he can see extra fields like this

 ->add('description')
if($user.hasRole(ROLE_SUPERADMIN))
->add('createdAt')

实际上我必须为许多领域这样做.有什么办法可以制作一些自定义类型，这样如果有那种类型，那么只有管理员才能看到那些像

Actually i have to do that for many fields . is there any way i can make some custom type so that if that type is there then only admin can see those like

->add('createdAt',"MyCustomType")

推荐答案

非常简单.只需根据安全上下文将您的自定义表单类型设为服务即可:

Pretty simple. Just make your custom form type a service, depending on the security context:

use SymfonyComponentSecurityCoreSecurityContext;

class UserType extends AbstractType
{

    private $securityContext;

    public function __construct(SecurityContext $securityContext)
    {
        $this->securityContext = $securityContext;
    }

    public function buildForm(FormBuilder $builder, array $options)
    {
        // Current logged user
        $user = $this->securityContext->getToken()->getUser();

        // Add fields to the builder
    }

    public function getDefaultOptions(array $options)
    {
        return array(
            'required'   => false,
            'data_class' => 'AcmeHelloBundleEntityUser'
        );
    }

    public function getName()
    {
        return 'user_type';
    }
}

然后将类标记为服务，使用特殊标签form.type:

Then mark the class as a service, with the special tag form.type:

services:
    form.type.user:
        class: AcmeHelloBundleFormTypeUserType
        arguments: ["@security.context"]
        tags:
            - { name: form.type, alias: user_type }

在您的控制器中，不要执行 new UserType()，而是从容器中获取服务:

In your controller, instead of doing new UserType(), grap the service from the container:

$form = $this->createForm($this->get('form.type.user'), $data);

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