symfony - 如何将 mimeType Assert 与 VichUploader 一起使用？

Question

当使用VichUploaderBundle上传任何文件时，此断言正在通过 Symfony 的表单验证：

/**
 * @Vich\UploadableField(mapping="product_media", fileNameProperty="path")
 * @Assert\File(
 *     mimeTypes = {"image/jpeg", "image/gif", "image/png", "video/mp4", "video/quicktime", "video/avi"},
 *     mimeTypesMessage = "Wrong file type (jpg,gif,png,mp4,mov,avi)"
 * )
 * @var File $pathFile
 */
protected $pathFile;

我看不出断言有什么问题。如何使用 VichUploader 验证文件类型？

score 6 · Accepted Answer

对于 Symfony 4.0，您需要导入 Validator 组件

composer require validator

现在在您的 Entity 类中，您可以使用 @Assert 注释。

// src/Entity/Author.php

// ...
use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\NotBlank()
     */
    public $name;
}

您可能需要在 config/packages/framework.yaml 文件中添加一些配置。无论如何，这一切都在 Symfony 官方文档中得到了完美的解释。

http://symfony.com/doc/current/validation.html

要检查 mime 类型，您需要使用文件约束http://symfony.com/doc/current/reference/constraints/File.html

这是一个工作示例

/**
 * @ORM\Column(type="string", length=255)
 * @var string
 */
private $cvFilename;

/**
 * @Assert\File(
 *     maxSize = "2048k",
 *     mimeTypes = {"application/pdf", "application/x-pdf"},
 *     mimeTypesMessage = "Please upload a valid PDF"
 * )
 * @Vich\UploadableField(mapping="cv", fileNameProperty="cvFilename")
 * @var File
 */
private $cvFile;

现在确实，@Vich\UploadableField 注释中有一个 mime 和大小选项，如此处所述https://github.com/dustin10/VichUploaderBundle/blob/master/Resources/doc/usage.md#step-2-link -the-upload-mapping-to-an-entity 但我无法让它工作。

@Assert 注释将生成表单错误，您可以在 Twig 中检索它们以提供反馈。

关键是使用：form_errors(candidature_form.cvFile)

这是一个工作示例：

 {% set error_flag = form_errors(candidature_form.cvFile) %}

        <label class=" {% if error_flag %}has-error{% endif %}">
            Curriculum Vitae (PDF)
        </label>
        {{ form_widget(candidature_form.cvFile) }}
        {% if error_flag %}
            <div class="has-error">
                {{ form_errors(candidature_form.cvFile) }}
            </div>
        {% endif %}

score 5 · Accepted Answer

您可以使用验证回调来解决此问题。

/**
 * @ORM\Entity(repositoryClass="AppBundle\Entity\Repository\EntityRepository")
 * @ORM\Table(name="entity")
 * @Assert\Callback(methods={"validate"})
 * @Vich\Uploadable
 */
class Entity
{
    /**
     * @Assert\File(maxSize="10M")
     * @Vich\UploadableField(mapping="files", fileNameProperty="fileName")
     *
     * @var File $file
     */
    protected $file;

    /**
     * @ORM\Column(type="string", length=255, name="file_name", nullable=true)
     *
     * @var string $fileName
     */
    protected $fileName;

...

    /**
     * @param ExecutionContextInterface $context
     */
    public function validate(ExecutionContextInterface $context)
    {
        if (! in_array($this->file->getMimeType(), array(
            'image/jpeg',
            'image/gif',
            'image/png',
            'video/mp4',
            'video/quicktime',
            'video/avi',
        ))) {
            $context
                ->buildViolation('Wrong file type (jpg,gif,png,mp4,mov,avi)')
                ->atPath('fileName')
                ->addViolation()
            ;
        }
    }
}

score 2 · Accepted Answer

对于 Symfony 4.x，此解决方案不起作用。我不知道为什么断言或事件验证器从不调用...

我找到了这个解决方案：验证不适用于关系字段

         use Symfony\Component\Validator\Constraints\File;
        /* ... */
        ->add('ba_file', VichFileType::class, [
                'label' => 'Bon d\'adhésion (PDF file)',
                'required' => false,
                'constraints' => [
                    new File([
                        'maxSize' => '5M',
                        'mimeTypes' => [
                            'image/jpeg',
                            'image/gif',
                            'image/png',
                        ]
                    ])
                ]
            ])

score 1 · Accepted Answer

For Symfony 3.0+, only 2 things need to be done:

Add use statement to import ExecutionContextInterface.

The callback annotation has to be added directly to the method/function instead of the class.

use Symfony\Component\Validator\Context\ExecutionContextInterface;

/**
* @Assert\File(maxSize="2M")
* @Vich\UploadableField(mapping="profile_image", fileNameProperty="avatar")
* @var File
*/
private $imageFile;

/**
* @ORM\Column(length=255, nullable=true)
* @var string $avatar
*/
protected $avatar;

/**
* @Assert\Callback
* @param ExecutionContextInterface $context
*/
public function validate(ExecutionContextInterface $context, $payload)
{
   // do your own validation
   if (! in_array($this->imageFile->getMimeType(), array(
       'image/jpeg',
       'image/gif',
       'image/png'
))) {
    $context
        ->buildViolation('Wrong file type (only jpg,gif,png allowed)')
        ->atPath('imageFile')
        ->addViolation();
   }
}

symfony - 如何将 mimeType Assert 与 VichUploader 一起使用？

4 回答 4

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