Rename uploaded files in multiple upload

Hi @fotoclubchivasso,

I hope you are doing well today!

There are some points you need to take care of in the code;

1. The custom function wpmudev_modify_uploaded_file_names is not returning $filename when $_POST['name-1'] is empty. Also, it lacks the process to update all the uploaded files with name-1.
2. The filter is added after the form has been submitted (forminator_form_before_save_entry), so it might not affect the uploaded files’ names.

Let’s try to revise your method as follows:

<?php
function wpmudev_modify_uploaded_file_names($filename, $filename_raw) {
    if (!empty($_POST['name-1'])) {
        $info = pathinfo($filename);
        $ext = empty($info['extension']) ? '' : '.' . $info['extension'];
        $user_name = sanitize_text_field($_POST['name-1']);
        $filename = $user_name . '_' . basename($filename, $ext) . $ext; // Append user_name before the original filename
        $filename = str_replace(' ', '_', $filename);
    }

    return $filename;
}

add_action('forminator_form_before_save_entry', 'wpmudev_uploaded_filename_check', 10, 1);
function wpmudev_uploaded_filename_check($form_id) {
    if($form_id == 202751) {
        remove_all_filters('sanitize_file_name');
        add_filter('sanitize_file_name', 'wpmudev_modify_uploaded_file_names', 10, 2);
    }
}

This revised method will first remove all existing filters attached to the ‘sanitize_file_name’ hook, thus ensuring that only your custom function is used to modify the file name.

Always remember to replace 202751 with your actual form ID in the actual implementation.

It’s crucial not to forget to remove the filter after the form is saved to prevent it from affecting other uploads on the site, so add another action:

add_action('forminator_form_after_save_entry', function($form_id) {
    if($form_id == 202751) {
        remove_filter('sanitize_file_name', 'wpmudev_modify_uploaded_file_names', 10, 2);
    }
}, 10, 1);

Finally, since altering with code can have unexpected consequences, it’s always good to have backup and proceed with caution. If you’re not comfortable making these changes, consider seeking professional help.

Kind regards,
Zafer

I have updated the code as you suggested but I still get upload error.

the previous code was working with the single file submission form block but was appending the submitter name together with the classic random string that forminator creates.

Can you suggest how to make this work also with multiple file uploads?

Hi again @fotoclubchivasso,

Please try the following code snippet instead.

<?php
function wpmudev_modify_uploaded_file_name( $filename, $filename_raw ) {	
	$uniq_id = substr($filename, 0, 12);
	$filename = str_replace(  $uniq_id.'-', '', $filename );
	
    return $filename;
}

add_action( 'forminator_form_before_save_entry', 'wpmudev_uploaded_filename_fix', 10, 1 );
function wpmudev_uploaded_filename_fix( $form_id ) {
	if ( $form_id != 6 ) {
		return;
	}

	add_filter('sanitize_file_name', 'wpmudev_modify_uploaded_file_name', 10, 2);
}

Please make sure to change 6 in if ( $form_id != 6 with your Form ID.

Kind regards,
Zafer

Hi @fotoclubchivasso

We haven’t heard from you in a while, I’ll go and mark this thread as resolved. If you have any additional questions or require further help, please let us know!

Kind Regards,
Kris