Reply To: acf_add_local_field not updating on save when auto-adding fields

• James

• July 28, 2016 at 12:35 pm

Hi @iamhexcoder

That’s because The $_GET['post'] and $_POST['post_ID'] variables are not available on the front end. As a workaround, you need to check if the current page is the backend or front end and use the right hook like this:

if( !is_admin() ){
    add_action('wp', 'Location_Specific_Fields');
} else {
    add_action('acf/init', 'Location_Specific_Fields');
}

You also need to correctly set the post ID like this:

if( !is_admin() ){
    
    global $post;
    $post_id = $post->ID;
    
} else {
    
    if( isset( $_GET['post'] ) ){
        $post_id = $_GET['post'];
    } elseif ( isset( $_POST['post_ID'] ) ){
        $post_id = $_POST['post_ID'];
    } else {
        $post_id = '0';
    }
    
}

I hope this helps 🙂