function poll_load in Drupal 7

Same name and namespace in other branches

1. 4 modules/poll.module \poll_load()
2. 5 modules/poll/poll.module \poll_load()
3. 6 modules/poll/poll.module \poll_load()

Implements hook_load().

File

modules/poll/poll.module, line 488

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

Code

function poll_load($nodes) {
  global $user;
  foreach ($nodes as $node) {
    $poll = db_query("SELECT runtime, active FROM {poll} WHERE nid = :nid", array(
      ':nid' => $node->nid,
    ))
      ->fetchObject();
    if (empty($poll)) {
      $poll = new stdClass();
    }

    // Load the appropriate choices into the $poll object.
    $poll->choice = db_select('poll_choice', 'c')
      ->addTag('translatable')
      ->fields('c', array(
      'chid',
      'chtext',
      'chvotes',
      'weight',
    ))
      ->condition('c.nid', $node->nid)
      ->orderBy('weight')
      ->execute()
      ->fetchAllAssoc('chid', PDO::FETCH_ASSOC);

    // Determine whether or not this user is allowed to vote.
    $poll->allowvotes = FALSE;
    if (user_access('vote on polls') && $poll->active) {
      if ($user->uid) {

        // If authenticated, find existing vote based on uid.
        $poll->vote = db_query('SELECT chid FROM {poll_vote} WHERE nid = :nid AND uid = :uid', array(
          ':nid' => $node->nid,
          ':uid' => $user->uid,
        ))
          ->fetchField();
        if (empty($poll->vote)) {
          $poll->vote = -1;
          $poll->allowvotes = TRUE;
        }
      }
      elseif (!empty($_SESSION['poll_vote'][$node->nid])) {

        // Otherwise the user is anonymous. Look for an existing vote in the
        // user's session.
        $poll->vote = $_SESSION['poll_vote'][$node->nid];
      }
      else {

        // Finally, query the database for an existing vote based on anonymous
        // user's hostname.
        $poll->allowvotes = !db_query("SELECT 1 FROM {poll_vote} WHERE nid = :nid AND hostname = :hostname AND uid = 0", array(
          ':nid' => $node->nid,
          ':hostname' => ip_address(),
        ))
          ->fetchField();
      }
    }
    foreach ($poll as $key => $value) {
      $nodes[$node->nid]->{$key} = $value;
    }
  }
}