Submit callback for poll_cancel_form().

File

drupal-7.x/modules/poll/poll.module, line 963

Enables your site to capture votes on different topics in the form of multiple choice questions.

Code

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

  db_delete('poll_vote')
    ->condition('nid', $node->nid)
    ->condition($user->uid ? 'uid' : 'hostname', $user->uid ? $user->uid : ip_address())
    ->execute();

  // Subtract from the votes.
  db_update('poll_choice')
    ->expression('chvotes', 'chvotes - 1')
    ->condition('chid', $node->vote)
    ->execute();

  unset($_SESSION['poll_vote'][$node->nid]);

  drupal_set_message(t('Your vote was cancelled.'));
}