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   2. drupal7

Submit callback for poll_cancel_form

Code

modules/poll/poll.module, line 762

<?php
function poll_cancel($form, &$form_state) {
  $node = node_load($form['#nid']);
  global $user;

  if ($user->uid) {
    db_query('DELETE FROM {poll_votes} WHERE nid = %d and uid = %d', $node->nid, $user->uid);
  }
  else {
    db_query("DELETE FROM {poll_votes} WHERE nid = %d and hostname = '%s'", $node->nid, ip_address());
  }

  // Subtract from the votes.
  db_query("UPDATE {poll_choices} SET chvotes = chvotes - 1 WHERE nid = %d AND chorder = %d", $node->nid, $node->vote);
}
?>