function tac_fields_recursive_update in Taxonomy Access Control 6

1 call to tac_fields_recursive_update()

tac_fields_admin_form_submit in tac_fields/tac_fields.admin.inc

Submit handler for permission administration form.

File

tac_fields/tac_fields.admin.inc, line 643

Administrative interface for TAC Fields.

Code

function tac_fields_recursive_update($tid, $field, $rid, $grants) {

  // First, process the original.
  tac_fields_update_grants($tid, $field, $rid, $grants);

  // Process the children.
  $ran_tids = array();

  // tids that have been processed.
  $run_tids = array(
    $tid,
  );

  // tids that are in the queue to be processed.
  while (count($run_tids) > 0) {
    foreach ($run_tids as $run_key => $run_tid) {

      // Some basic loop protection.
      if (!(array_search($run_tid, $ran_tids) === FALSE)) {
        drupal_set_message(t("Loop detected for tid %run_tid. Stopping.", array(
          '%run_tid' => $run_tid,
        )));
        $run_tids = array();

        // stop the execution
      }
      else {
        $result = db_query('SELECT th.tid FROM {term_hierarchy} th WHERE th.parent = %d', $run_tid);

        // If this tid has children, update grants and queue the children
        while ($row = db_fetch_array($result)) {
          tac_fields_update_grants($row['tid'], $field, $rid, $grants);
          $run_tids[] = $row['tid'];
        }

        // Remove this tid from the queue and mark as processed,
        unset($run_tids[$run_key]);
        $ran_tids[] = $run_tid;
      }
    }
  }
}