object fields hook, object data hook

I don’t provide a lot of support for the developer hooks here, but I’ll try to give some basic guidance.

It sounds like you’re using the object_sync_for_salesforce_wordpress_object_fields filter. If not, you need to be more specific, but I’ll start with that assumption.

This hook is meant to allow you to add fields that aren’t added in a standard WordPress way. So if you were working with the user object, this would mean user fields that are not in wp_users or wp_usermeta. The methods array means that there needs to be a WordPress function that can work similarly to the core WP methods.

From the docs:

array (
    'key' => 'ID',
    'table' => 'wp_users',
    'methods' => array (
        'create' => 'wp_insert_user',
        'read' => 'get_user_by',
        'update' => 'wp_update_user',
        'delete' => 'wp_delete_user'
    )
),

In this example, you can see the methods for a standard WordPress user ID field. You can create it with wp_insert_user, read it with get_user_by, update it with wp_update_user, and delete with wp_delete_user.

What this means is that your field needs to have equivalent methods for creating, reading, updating, and deleting its value.

And yes, you certainly can do a var_dump or error_log of any parameters that you want in this filter. It’s always a good idea.

I’m going to mark this as resolved, as it doesn’t seem like you need further help and it is about the specific functionality of developer hooks.