function poll_vote

Submit handler for processing a vote.

File

modules/poll/poll.module, line 752

Code

function poll_vote($form, &$form_state) {
    $node = $form['#node'];
    $choice = $form_state['values']['choice'];
    global $user;
    db_insert('poll_vote')->fields(array(
        'nid' => $node->nid,
        'chid' => $choice,
        'uid' => $user->uid,
        'hostname' => ip_address(),
        'timestamp' => REQUEST_TIME,
    ))
        ->execute();
    // Add one to the votes.
    db_update('poll_choice')->expression('chvotes', 'chvotes + 1')
        ->condition('chid', $choice)
        ->execute();
    cache_clear_all();
    if (!$user->uid) {
        // The vote is recorded so the user gets the result view instead of the
        // voting form when viewing the poll. Saving a value in $_SESSION has the
        // convenient side effect of preventing the user from hitting the page
        // cache. When anonymous voting is allowed, the page cache should only
        // contain the voting form, not the results.
        $_SESSION['poll_vote'][$node->nid] = $choice;
    }
    drupal_set_message(t('Your vote was recorded.'));
    // Return the user to whatever page they voted from.
}