3

我尝试从 CategoryType 表单中设置字段“作者”的值。我希望它是使用 FOS 包登录的当前用户的用户 ID。

我的 CategoryType 表格：

namespace My\CategoryBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class CategoryType extends AbstractType
{
    private $userId;

    public function __construct(array $userId)
    {
        $this->userId = $userId;
    }

     /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('title')
            ->add('author')
            ->add('content')
        ;
    }

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'My\CategoryBundle\Entity\Category',
            'auteur' => $this->userId
        ));
    }

    /**
     * @return string
     */
    public function getName()
    {
        return 'my_categorybundle_category';
    }
}

我的控制器动作：

public function addAction()
{
    $category = new Category;
    $user = $this->get('security.context')->getToken()->getUser(); 
    $userId = $user->getId();

    $form = $this->get('form.factory')->create(new CategoryType(), array( 'author' => $userId));

    $request = $this->get('request');
    if ($request->getMethod() == 'POST') {
        $form->bind($request);

        if ($form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($category);
            $em->flush();

        return $this->redirect($this->generateUrl('mycategory_voir',
            array('id' => $category->getId())));
        }
    }
    return $this->render('MyCategoryBundle:Category:add.html.twig',
        array(
            'form' => $form->createView(),
        ));
}

我在运行操作时发现了这个错误：

可捕获的致命错误：传递给 My\CategoryBundle\Form\CategoryType::__construct() 的参数 1 必须是一个数组，没有给出，在第 55 行的 /My/CategoryBundle/Controller/CategoryController.php 中调用并在 /My/CategoryBundle 中定义/Form/CategoryType.php 第 13 行

我传递给表单的不是已经是一个数组吗？

4

2 回答 2

10

你的问题在这条线上

$form = $this->get('form.factory')->create(new CategoryType(), array( 'author' => $userId));

您不满足My\CategoryBundle\FormCategoryType::__construct(). 在这里，让我们以另一种方式看待它。

$form = $this->get('form.factory')->create(
    new CategoryType(/* You told PHP to expect an array here */)
  , array('author' => $userId)
);

您作为第二个参数发送的数组Symfony\Component\Form\FormFactory::create()是最终作为数组注入的$options数组My\CategoryBundle\Form\CategoryType::buildForm()

在我看来，您有几种不同的方法来解决这个问题

  1. 更新参数签名并要求My\CategoryBundle\FormCategoryType::__construct()传递/接收整个用户对象（不仅仅是他们的 id - 请记住，此时您正在使用 Doctrine 关系，而不是他们映射到的较低级别的外键）

    namespace My\CategoryBundle\Form;

use My\CategoryBundle\Entity\User; /* Or whatver your User class is */
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class CategoryType extends AbstractType
{
    private $author;

    public function __construct( User $author )
    {
        $this->author = $author;
    }

    和

    $form = $this->get('form.factory')->create(
    new CategoryType(
      $this->get('security.context')->getToken()->getUser()
    )
);

  2. 不要将 注入User到类型的构造函数中，让选项处理它

    namespace My\CategoryBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class CategoryType extends AbstractType
{
    private $userId;

     /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('title')
            ->add('author', 'hidden', array('data'=>$options['author']))
            ->add('content')
        ;
    }

    /**
     * @param OptionsResolverInterface $resolver
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'My\CategoryBundle\Entity\Category'
        ));
    }

    /**
     * @return string
     */
    public function getName()
    {
        return 'my_categorybundle_category';
    }
}

  3. 甚至不用费心将作者放入表单并让控制器处理它

    $form = $this->get('form.factory')->create(
    new CategoryType()
  , array('author' => $this->get('security.context')->getToken()->getUser() )
);

    和

    if ($request->getMethod() == 'POST') {
    $form->bind($request);

    if ($form->isValid()) {
        $category->setAuthor(
          $this->get('security.context')->getToken()->getUser()
        );
        $em = $this->getDoctrine()->getManager();
        $em->persist($category);
        $em->flush();

    return $this->redirect($this->generateUrl('mycategory_voir',
        array('id' => $category->getId())));
    }
}

  4. 将您的表单类型转换为服务并使用 DI 容器注入安全上下文

    应用程序/配置/config.yml

    services:
  form.type.my_categorybundle_category:
    class: My\CategoryBundle\Form\CategoryType
    tags:
      - {name: form.type, alias: my_categorybundle_category}
    arguments: ["%security.context%"]

    更新您的类型以接收安全上下文

    namespace My\CategoryBundle\Form;

use Symfony\Component\Security\Core\SecurityContext;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class CategoryType extends AbstractType
{
    private $author;

    public function __construct( SecurityContext $security )
    {
        $this->author = $security->getToken()->getUser();
    }

    然后在您的控制器中，使用其服务名称创建表单

    $form = $this->get('form.factory')->create('my_categorybundle_category');
于 2013-11-06T15:19:27.987 回答
0

您当前的代码将数组传递给create()方法，而不是您的CategoryType构造。

$form = $this->get('form.factory')->create(new CategoryType(), array( 'author' => $userId));

应该

$form = $this->get('form.factory')->create(new CategoryType(array( 'author' => $userId)));
于 2013-11-06T15:16:07.490 回答