Hidden GUID Field

• steve_bastion

• January 11, 2023 at 10:01 am

Hi,

Can I create a hidden field in ACF and when the post is saved use an action or filter to set a random GUID against it and save it.

That GUID from that point never ever gets touched/updated ( i.e. get_post_meta exists condition inside the actions/filter ).

Also could it work in a repeater.

I’m having a complete developer brain meltdown today so thought I would ask the community.

• John Huebner

• January 12, 2023 at 11:49 am

Not sure what you mean by GUID? is this the value that is saved in the _posts table in WP?

• steve_bastion

• January 13, 2023 at 11:52 am

No worries all, I probably really confused it.

I just added a Text Field and added a CSS class of hidden-field and then just did this:

add_filter('acf/update_value/key=XXXXXXXXX', 'my_acf_update_value', 10, 4);

function my_acf_update_value( $value, $post_id, $field ) {

    if( !$value ) {
        return uniqid();
    } else {
        return $value;
    }

}