Hi @gregor
I can reproduce it now. It seems that the basic uploader doesn’t check the file type. As a workaround, you can try the following code:
add_filter('acf/validate_value/type=file', 'my_acf_validate_value', 10, 4);
function my_acf_validate_value( $valid, $value, $field, $input ){
// bail early if value is already invalid
if( !$valid ) {
return $valid;
}
// Get the allowed types and store it in an array
$allowed_types = explode(',', trim($field['mime_types']));
// Get the current file extension
$file_extension = pathinfo($value)['extension'];
// Check if the current file extension is allowed or not
if( !in_array($file_extension, $allowed_types) ){
$valid = 'This file type is not allowed';
}
// return
return $valid;
}
If you want, you can also open a new ticket so this issue can be passed directly to the plugin author? You can open a new ticket here: https://support.advancedcustomfields.com/new-ticket.
I hope this helps 🙂
