How to Disable the Validation of Submitted Data

Sometimes it is useful to suppress the validation of a form altogether. For these cases you can set the validation_groups option to false:

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use Symfony\Component\OptionsResolver\OptionsResolver;

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults(array(
        'validation_groups' => false,
    ));
}

Note that when you do that, the form will still run basic integrity checks, for example whether an uploaded file was too large or whether non-existing fields were submitted.

The submission of extra form fields can be controlled with the allow_extra_fields config option and the maximum upload file size should be handled via your PHP and web server configuration.