Symfony - ImageField 上的 easyadmin 4 文件类型约束

Question

How can I limit the ImageField to only accept png and jpg?

This is my code, but the issue is that i can upload pdf or.exe as well.

I cannot find a way to add a constraint here.

public function configureFields(string $pageName): iterable
    {
        return [
            TextField::new('entryTitle'),
            TextEditorField::new('entryText'),
            AssociationField::new('entryCategory'),
            ImageField::new('mainImage')
                ->setBasePath('uploads/images/Blog')
                ->setUploadDir('public/uploads/images/Blog')
                ->setUploadedFileNamePattern('[randomhash].[extension]')
                ->setHelp('Only .png and .jpg')
        ];
    }

Answer 1

You should just add an @Assert\File on your property.

use Symfony\Component\Validator\Constraints as Assert;

/**
 * @Assert\File(
 *     maxSize="5M",
 *     maxSizeMessage="File exceed limit of: {{limit}}.",
 *     mimeTypes = {"image/jpeg", "image/png"},
 *     mimeTypesMessage = "File must be a JPG or PNG."
 * )
 */
private ?File $imageFile = null;

Or if you really want to set it up manually you could use setFormTypeOption :

ImageField::new('mainImage')
    ->setBasePath('uploads/images/Blog')
    ->setUploadDir('public/uploads/images/Blog')
    ->setUploadedFileNamePattern('[randomhash].[extension]')
    ->setHelp('Only .png and .jpg')
    ->setFormTypeOption('constraints', [
        new File([
            'maxSize' => '5M',
            'mimeTypes' => [
                'image/jpeg',
                'image/png',
            ],
            'mimeTypesMessage' => 'Please upload a valid image. '
        ])
    ]);