Club Drupal

/**

 * Alter the query that will produce the list of submission IDs to be

 * downloaded.

 *

 * @param object $query

 *   The query object that is being built up to provide the list of submission

 *   IDs.

 *

 * @see webform_download_sids_query()

 */

function hook_webform_download_sids_query_alter(&$query) {

  global $user;

  // check if component value matches a node ID and author of that node.

  $query->join('webform_submitted_data', 'wsd', 'ws.sid = wsd.sid');

  $query->condition('wsd.cid', 2);

  $query->join('node', 'n', 'wsd.data = n.nid');

  $query->condition('n.uid', $user->uid);

}

 *   Return $form with whatever changes are desired.

function _webform_edit_component(array $component, array $form, array $form_state) {