Why doesn't file validation work in Symfony?

Question

symfony

Good afternoon.
There is a form class that has a collection of files (code below), everything works as it should, until you try to add a file with an invalid mimetype or larger, then no validation error occurs (file assertion at the very bottom)

# форма


class CreateMessageType extends BaseCreateMessageType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
    $builder
      ->add('body', 'wysiwyg_textarea', array(
          'label' => false
        ));

    $builder
      ->add(
        'files', 'collection', array(
          'type' => new MessageFileType(),
          'allow_add'    => true,
          'by_reference' => false,
        )
      )
    ;
    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'xxx\ForumBundle\Entity\Message',
      'error_bubbling' => true,
            'new_entry'  => false,
        ));
    }
}

# описание типа поля файлов
class MessageFileType extends AbstractType
{
  public function buildForm(FormBuilderInterface $builder, array $options)
  {
    $builder->add('file', 'file');
  }

  public function setDefaultOptions(OptionsResolverInterface $resolver)
  {
    $resolver->setDefaults(array(
        'data_class' => 'xxx\ForumBundle\Entity\MessageFiles',
        'error_bubbling' => true,
        'error_mapping' => array(
          'upload' => 'file'
        )
      ));
  }

  public function getName()
  {
    return 'file';
  }
} 

# ассерт файла

class MessageFiles
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
   * assert\File(
   *     maxSize = "3070k",
   *     mimeTypes = {
   *            	"application/pdf",
   *              "application/x-pdf",
   *              "image/gif",
   * 				"image/jpeg",
   * 				"image/pjpeg",
   * 				"image/png",
   * 				"image/tiff",
   * 				"image/vnd.wap.wbmp",
   * 				"image/bmp",
   * 				"image/x-bmp",
   * 				"image/x-ms-bmp",
   * 				"text/rtf",
   * 				"application/rtf",
   * 				"application/vnd.oasis.opendocument.text",
   * 				"application/msword",
   * 				"application/vnd.openxmlformats-officedocument.wordprocessingml.document"
   * 		},
   *     mimeTypesMessage = "Please upload a valid file"
   * )
   *
   * assert\NotBlank()
     */
    public $file;

    # .........

}

PS - the parser eats the dog before the ASSERT, but in fact it is in the code

Answer 1

maxSize = "3070k" - almost equal to 3M.
Just in case, check the limit set in the nginx client_max_body_size configuration, since it is 2M by default.
It is also worth looking into php.ini upload_max_filesize, post_max_size. Since if the file size > maxSize but < client_max_body_size - then this is a validation error, and if the size > client_max_body_size - then this is - 413 "Request Entity Too Large" - already a server error (what if it is configured not to show them) .
PS I understand that the answer may seem primitive to some, but I recently had a similar situation.

Answer 2

Take 2. symfony.com/doc/current/reference/forms/types/coll...
Try this one too.