Symfony 5、EasyAdmin3：字段ImageField，怎么不删？

Question

Excuse me for my English.

In a form I use the ImageField (esasyadmin 3) like this:

$img = ImageField::new('img')
->setBasePath('images)
->setUploadDir('public/images)
->setUploadedFileNamePattern('[name].[extension]')
->setRequired(false)
;

The goal is to choose an image from the “public/images” folder. However, if I decide to change this image, it removes the image I had previously selected from the folder. I don't want this behavior because my image can be used elsewhere. How to prevent this deletion? Have I chosen the right type of control? Thank you

Answer 1

sorry for the delay but use this:

$img=ImageField::new('img')
    ->setBasePath('images')
    ->setUploadDir('public/images')
    ->setUploadedFileNamePattern("$name.[extension]")
    ->setRequired(false);

Answer 2

Again, sorry for the delay but i think it can be usefull to share something about this problem.

I had the same problem where i wanted to prevent the default image deletion process when a new image is uploaded. I tried many different methods and i finally figured out what was the problem.

First of all, you can override the default type of the image. Using the setFormType method, you can set the ImageField to a FileUploadType like the example bellow:

public function configureFields(string $pageName): iterable
   {
      return [
         ...
         ImageField::new('image')
            ->setFormType(FileUploadType::class)
            ...
   }

Then, if you take a closer look at the FileUploadType on the configureOptions method, you will see some parameters that can be overrided.

$resolver->setDefaults([
   'upload_dir' => $this->projectDir.'/public/uploads/files/',
   'upload_new' => $uploadNew,
   'upload_delete' => $uploadDelete,
   'upload_filename' => $uploadFilename,
   'upload_validate' => $uploadValidate,
   'download_path' => $downloadPath,
   'allow_add' => $allowAdd,
   'allow_delete' => true,
   'data_class' => $dataClass,
   'empty_data' => $emptyData,
   'multiple' => false,
   'required' => false,
   'error_bubbling' => false,
   'allow_file_upload' => true,
]);

The last you need to do is to override the default function for the upload_delete option. Now you just need to override this callable using the function setFormTypeOption like this:

public function configureFields(string $pageName): iterable
   {
      return [
         ...
         ImageField::new('image')
            ->setFormType(FileUploadType::class)
            ->setFormTypeOption('allow_delete', false)
            ->setFormTypeOption('upload_delete', function(File $file) {})
            ...
   }

You can also set the allow_delete to false using the same method.