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   1  <?php
   2  
   3  /**
   4   * Sort in menu hierarchy order.
   5   *
   6   * Given a field name of 'p' this produces an ORDER BY on p1, p2, ..., p9.
   7   * This is only really useful for the {menu_links} table.
   8   *
   9   * @ingroup views_sort_handlers
  10   */
  11  class views_handler_sort_menu_hierarchy extends views_handler_sort {
  12    function query() {
  13      $this->ensure_my_table();
  14      $max_depth = isset($this->definition['max depth']) ? $this->definition['max depth'] : MENU_MAX_DEPTH;
  15      for ($i = 1; $i <= $max_depth; ++$i) {
  16        $this->query->add_orderby($this->table_alias, $this->field . $i, $this->options['order']);
  17      }
  18    }
  19  }