[Resolved] How can we update a custom file upload file value?

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[matthewS-9]

Tell us what you are trying to do?
1. We have a custom field "File Upload" with "Allow multiple instances of this field" selected.
2. We have an array $file_links with several file links.
3. How can we update the custom field "File Upload" value with the array?
4. We already tried
update_post_meta($post_id, 'wpcf-file-upload', $file_links);
but it seems that it does not work.
5. Please advise.

[Luo Yang]

Hello,

For multiple instance field, you can try function add_post_meta(), for example:

delete_post_meta($post_id,  'wpcf-file-upload');
foreach($file_links as $k=>$v){
	add_post_meta($post_id,  'wpcf-file-upload', $v);
}

More help:
https://developer.wordpress.org/reference/functions/delete_post_meta/
https://developer.wordpress.org/reference/functions/add_post_meta/

[matthewS-9]

This may relate to another issue https://toolset.com/forums/topic/ajax-does-not-work-when-uploading-additional-files-to-a-file-upload-field/

We shall try this solution after fixing the issue above.

[Luo Yang]

I have answered the thread you mentioned above, please check it, thanks

[matthewS-9]

Thank you!

However it seems that the issue has not been fully fixed yet.

Please review it here https://toolset.com/forums/topic/ajax-does-not-work-when-uploading-additional-files-to-a-file-upload-field/

[Luo Yang]

I have escalated that thread, please let me know if you need more assistance for this thread, thanks

[matthewS-9]

Thanks, Luo.

The code in this thread does not work for a form with enabled AJAX and disabled option "Use the WordPress Media Library manager for image, video, audio, or file fields." (when one additional file is added a previous file is lost)

We shall recheck it when when there is a patch for https://toolset.com/forums/topic/ajax-does-not-work-when-uploading-additional-files-to-a-file-upload-field/

[Luo Yang]

That issue has been confirmed as a bug
https://toolset.com/forums/topic/ajax-does-not-work-when-uploading-additional-files-to-a-file-upload-field/

can we close this one, and follow above one?

[matthewS-9]

My issue is resolved now. Thank you!