Hi @flexi2202,
Is your form only visible to logged in users? I assume you’re logged in as non-admin?
I think you need to use the acf_form() parameters
On of the parameters is: html_after_fields.
As you’re logged in, you can access the user ID:
$user_id = get_current_user_id();
So you could then use a hidden value:
'html_after_fields' => '<input type="hidden" name="acf[author_id]" value="'.$user_id.'"/>',
Using acf/save_post
You can then grab the hidden value and updated the post author:
add_action('acf/save_post', 'my_acf_save_post');
function my_acf_save_post( $post_id ) {
$arg = array(
'ID' => $post_id,
'post_author' => $_POST['acf']['author_id']
);
wp_update_post( $arg );
}
Code is untested but should point you in the right direction
