This hook is helper for hook tableon_extend_settings and allows to set default data there.
Example:
1 2 3 4 | add_action('tableon_extend_settings_default', function($defaults) { $defaults[$this->setting_key] = 'id,post_title,__price'; return $defaults; }, 10, 1); |
$this->setting_key - can be string value, for example 'my_new_option_1', see hook tableon_extend_settings.