Question

我是Symfony 3的新用户，当我尝试激活我的帐户时，我遇到了问题。我从FOSUserBundle扩展我的用户实体。我已经激活了FOS_User的确认系统。此外，当用户注册我的应用程序时，他必须上传文件。为此，我创建了一个FileUploader服务和一个ImageUploadListener侦听器。问题是当我从我的Gmail电子邮件中点击我的激活链接时，我收到以下错误：

Uncaught PHP Exception Symfony\Component\Debug\Exception\ContextErrorException: "Notice: Undefined variable: fileName" at /home/clement/Rendu/tech-web/src/UserBundle/EventListener/ImageUploadListener.php line 49

你可以帮帮我吗？提前感谢法国开发人员的头痛！

PS：我跟着this tutorial来实现我的文件上传功能。

user.php的

namespace UserBundle\Entity;

use FOS\UserBundle\Model\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Entity
 * @ORM\Table(name="fos_user")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string", length=255)
     *
     * @Assert\NotBlank(message="Please enter your phone.", groups={"Registration", "Profile"})
     * @Assert\Length(
     *     min=3,
     *     max=255,
     *     minMessage="The phone is too short.",
     *     maxMessage="The phone is too long.",
     *     groups={"Registration", "Profile"}
     * )
     */
    protected $phone;

    /**
     * @ORM\Column(type="string")
     *
     * @Assert\NotBlank(message="Please, upload a file.")
     * @Assert\File(mimeTypes={ "application/pdf", "image/jpeg" })
     */
    private $image;

    public function __construct()
    {
        parent::__construct();
        // your own logic
        $this->roles = array('ROLE_USER');
    }

    public function getPhone() {
        return $this->phone;
    }

    public function setPhone($phone) {
        $this->phone = $phone;  
    }


    public function setImage($image)
    {
        $this->image = $image;
        return $this;
    }

    public function getImage()
    {
        return $this->image;
    }
}

RegistrationType.php

namespace UserBundle\Form;

use UserBundle\Entity\User;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\FileType;

class RegistrationType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('phone')
            ->add('image', FileType::class);
    }

    public function getParent()
    {
        return 'FOS\UserBundle\Form\Type\RegistrationFormType';

        // Or for Symfony < 2.8
        // return 'fos_user_registration';
    }

    public function getBlockPrefix()
    {
        return 'app_user_registration';
    }

    // For Symfony 2.x
    public function getName()
    {
        return $this->getBlockPrefix();
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => User::class,
        ));
    }
}

FileUploader.php

namespace UserBundle\Service;

use Symfony\Component\HttpFoundation\File\UploadedFile;

class FileUploader
{
    private $targetDir;
    public function __construct($targetDir)
    {
        $this->targetDir = $targetDir;
    }

    public function upload(UploadedFile $file)
    {

        $fileName = md5(uniqid()).'.'.$file->guessExtension();
        $file->move($this->getTargetDir(), $fileName);
        return $fileName;
    }

    public function getTargetDir()
    {
        return $this->targetDir;
    }
}

ImageUploadListener

namespace UserBundle\EventListener;

use Symfony\Component\HttpFoundation\File\UploadedFile;
use Doctrine\ORM\Event\LifecycleEventArgs;
use Doctrine\ORM\Event\PreUpdateEventArgs;
use UserBundle\Entity\User;
use UserBundle\Service\FileUploader;
use Symfony\Component\HttpFoundation\File\File;

class ImageUploadListener
{
    private $uploader;
    private $fileName;

    public function __construct(FileUploader $uploader)
    {
        $this->uploader = $uploader;
    }

    public function prePersist(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        $this->uploadFile($entity);
    }

    public function preUpdate(PreUpdateEventArgs $args)
    {
        $entity = $args->getEntity();
        $this->uploadFile($entity);
    }

    private function uploadFile($entity)
    {
        // upload only works for User entities
        if (!$entity instanceof User) {
            return;
        }

        $file = $entity->getImage();

        // only upload new files
        if ($file instanceof UploadedFile) {
            $fileName = $this->uploader->upload($file);
        }

        $entity->setImage($fileName);
    }
}

services.yml

parameters:
    #parameter_name: value
services:
    _defaults:
        autowire: true
        autoconfigure: true
        public: false
    AppBundle\:
        resource: '../../src/AppBundle/*'
        exclude: '../../src/AppBundle/{Entity,Repository,Tests}'
    AppBundle\Controller\:
        resource: '../../src/AppBundle/Controller'
        public: true
        tags: ['controller.service_arguments']
    app.form.registration:
        class: UserBundle\Form\RegistrationType
        tags:
            - { name: form.type, alias: app_user_registration }           
    UserBundle\Service\FileUploader:
        arguments:
            $targetDir: '%images_directory%'             
    UserBundle\EventListener\ImageUploadListener:
        tags:
            - { name: doctrine.event_listener, event: prePersist }
            - { name: doctrine.event_listener, event: preUpdate }

config.yml

fos_user:
    db_driver: orm
    firewall_name: main
    user_class: UserBundle\Entity\User
    service:
        mailer: fos_user.mailer.twig_swift
    from_email:
        address: "%mailer_user%"
        sender_name: "%mailer_user%"
    registration:
        form:
            type: UserBundle\Form\RegistrationType
        confirmation:
            enabled: true
            template:   '@FOSUser/Registration/email.txt.twig'
            from_email:
                address: "%mailer_user%"
                sender_name: "%mailer_user%"
    profile:
        form:
            type: UserBundle\Form\EditType

Answer 1

每次保存用户时都会启动您的活动。激活用户帐户时，您将使用数据库中的doctrine更新用户，以便调用preUpdate事件。

为避免通知你应该这样做：

// only upload new files
if ($file instanceof UploadedFile) {
    $fileName = $this->uploader->upload($file);
    $entity->setImage($fileName); 
}

为避免每次上传时调用，您必须检查文件是否已上传或覆盖注册操作以上传它而不是使用doctrine事件来执行此操作

为什么Symfony似乎在使用FOSUserBundle的确认过程中调用了我的eventListener？

1 个答案: