gassigeher

Hello, you can try this in the functions.php, made 4 extra fields:

add_filter('babe_checkout_args', 'customtheme_babe_checkout_args', 10, 2);
/**
 * Add checkout fields
 */
function customtheme_babe_checkout_args( $args_meta, $args ) {
    $args_meta['new_field'] = isset($args['meta']['new_field']) ? $args['meta']['new_field'] : '';
    $args_meta['second_field'] = isset($args['meta']['second_field']) ? $args['meta']['second_field'] : '';
    $args_meta['third_field'] = isset($args['meta']['third_field']) ? $args['meta']['third_field'] : '';
    $args_meta['fourth_field'] = isset($args['meta']['fourth_field']) ? $args['meta']['fourth_field'] : '';
    return $args_meta;
}
////////
add_filter('babe_checkout_field_label', 'customtheme_babe_checkout_field_label', 10, 2);
/**
 * Add checkout field title
 */
function customtheme_babe_checkout_field_label( $field_title, $field_name ) {
    if ($field_name === 'new_field'){
       $field_title = __('Hotel', 'textdomain');
    }
    if ($field_name === 'second_field'){
       $field_title = __('Second Field', 'textdomain');
    }
    if ($field_name === 'third_field'){
       $field_title = __('Third Field', 'textdomain');
    }
    if ($field_name === 'fourth_field'){
       $field_title = __('Fourth Field', 'textdomain');
    }
    return $field_title;
}
////////
add_filter('babe_checkout_field_required', 'customtheme_babe_checkout_field_required', 10, 2);
/**
 * Required tag for checkout field
*/
function customtheme_babe_checkout_field_required($required_tag, $field_name){
   if ($field_name === 'new_field' || $field_name === 'second_field' || $field_name === 'third_field' || $field_name === 'fourth_field'){
      $required_tag = 'required="required"';
   }
   return $required_tag;
}
add_filter('babe_sanitize_checkout_vars', 'customtheme_sanitize_checkout_vars', 10, 2);
/**
 * Add fields to sanitize checkout vars method
 */
function customtheme_sanitize_checkout_vars( $output, $arr ) {

    $output['new_field'] = isset($arr['new_field']) ? sanitize_text_field($arr['new_field']) : '';
    $output['second_field'] = isset($arr['second_field']) ? sanitize_text_field($arr['second_field']) : '';
    $output['third_field'] = isset($arr['third_field']) ? sanitize_text_field($arr['third_field']) : '';
    $output['fourth_field'] = isset($arr['fourth_field']) ? sanitize_text_field($arr['fourth_field']) : '';
    return $output;
}