Forms 所有视图中的Symfony访问表单

我在应用程序中有一个登录/注册表单

namespace UserBundle\Form;

use Symfony\Component\Form\AbstractType;

class RegisterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('username', 'text', ['label' => 'Username']);
        $builder->add('email', 'hidden', ['label' => 'Email']);
        $builder->add('password', 'password',['label' => 'Password']);

        $builder->add('cancel', SubmitType::class, [
            'label' => 'CANCEL'
        ]);

        $builder->add('register', SubmitType::class, [
            'label' => 'CREATE ACCOUNT'
        ]);
    }

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

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults([
            'data_class' => 'UserBundle\Entity\User',
        ]);
    }
}

我希望这在所有页面中都可用，因此我希望表单标记放置在

base.html.twig

我的问题是，Symfony推荐的方法是什么？我不想在控制器的每一个动作中都传递表单

我怎么知道的？通过定义服务？欢迎提供任何示例或指针

---

谢谢。

您的意思是传递由您的

注册表类型创建的
FormView
的实例

我认为最简单的方法是创建Twig扩展，它将
FormBuilder
注册为它的依赖项，并在表单视图中公开一个函数（甚至可能是一个全局变量）。然后，您还可以只使用表单视图的一个实例，并根据需要多次使用它

请参见
我需要一个dedictaed控制器来处理表单。

然后可以直接从twig调用此控制器操作，将控制器调用添加到main layout.html.twig中

例如

控制器是这样的

class LoginController extends Controller 
{
  public function form(Request $request)
  {
    // create your form

    // return html of form
  }
}

参考：-看@Blowski的答案

注册示例

<?php
namespace AppBundle\Controller\Security;

use AppBundle\Entity\User,
    AppBundle\Form\Entity\UserType;
use \Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller,
    Symfony\Component\HttpFoundation\Request;

class RegistrationController extends Controller
{
    /**
     * @Route("/register", name="user_registration")
     */
    public function registerAction(Request $request)
    {
        // 1) build the form
        $user = new User();
        $form = $this->createForm(UserType::class, $user);

        // 2) handle the submit (will only happen on POST)
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {

            // 3) Encode the password (you could also do this via Doctrine listener)
            $password = $this->get('security.password_encoder')
                ->encodePassword($user, $user->getPlainPassword());
            $user->setPassword($password);

            // 4) save the User!
            $em = $this->getDoctrine()->getManager();
            $em->persist($user);
            $em->flush();

            // ... do any other work - like sending them an email, etc
            // maybe set a "flash" success message for the user

            return $this->redirectToRoute('replace_with_some_route');
        }

        return $this->render(
            'AppBundle:security:register.html.twig',
            array('form' => $form->createView())
        );
    }
}

假设我也希望将其用于注册，那么我们在哪里处理注册逻辑呢？我只需要创建一个控制器，例如RegistrationController，它具有处理用户注册的功能。然后可以使用细枝控制器函数调用所需的操作。将更新答案谢谢，我忘了提到它是Ajax表单。不管怎样，我现在知道了该怎么走了。：-）
<?php
namespace AppBundle\Controller\Security;

use AppBundle\Entity\User,
    AppBundle\Form\Entity\UserType;
use \Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller,
    Symfony\Component\HttpFoundation\Request;

class RegistrationController extends Controller
{
    /**
     * @Route("/register", name="user_registration")
     */
    public function registerAction(Request $request)
    {
        // 1) build the form
        $user = new User();
        $form = $this->createForm(UserType::class, $user);

        // 2) handle the submit (will only happen on POST)
        $form->handleRequest($request);
        if ($form->isSubmitted() && $form->isValid()) {

            // 3) Encode the password (you could also do this via Doctrine listener)
            $password = $this->get('security.password_encoder')
                ->encodePassword($user, $user->getPlainPassword());
            $user->setPassword($password);

            // 4) save the User!
            $em = $this->getDoctrine()->getManager();
            $em->persist($user);
            $em->flush();

            // ... do any other work - like sending them an email, etc
            // maybe set a "flash" success message for the user

            return $this->redirectToRoute('replace_with_some_route');
        }

        return $this->render(
            'AppBundle:security:register.html.twig',
            array('form' => $form->createView())
        );
    }
}