[WordPress] Integration with Ajax Search Lite & Bogo (Adjust the seach query for the page's language)

in_your_functions.php

// Adjust the seach query of Ajax Search Lite with Bogo
add_action('asl_query_add_args', 'ajax_search_light_and_bogo_integration', 100, 1);
function ajax_search_light_and_bogo_integration( $args ) {
  global $wpdb;
  // Bogo saves the page language into the cookie, so we can just pick it.
  $loc = $_COOKIE['lang'];
  if(!$loc) { return $args; }

  $args['where'] .= <<<SQL
AND ID IN ((
  SELECT post_id  FROM $wpdb->postmeta
  WHERE $wpdb->postmeta.meta_key = '_locale' AND $wpdb->postmeta.meta_value='$loc'
))
SQL;
  return $args;
}