Hook node view implementation

gistfile1.php

/**
 * Implements hook_node_view().
 */
function superpoll_node_view($node, $view_mode, $langcode) {
  // Provide a link back to the parent poll on superpoll options.
  if ($node->type == 'superpoll_option' && $view_mode == 'full') {
    $node->content['linkback_to_poll'] = array(
      '#theme' => 'superpoll_option_header',
      '#title' => $node->title,
      '#description' => field_view_field('node', $node, 'field_description'),
      '#back_to_poll_link' => l(t('Back to poll'), 'node/' . $node->poll_nid, array('attributes' => array('class' => array('back-to-poll', 'button')))),
      '#node' => $node,
      '#weight' => -10,
    );
  }
  
  if ($node->type == 'superpoll' && $view_mode == 'full') {
    // Use the core jQuery UI implementation to display modal confirmations.
    // @see superpoll_record_vote_callback()
    if (superpoll_show_confirmation($node)) {
      _superpoll_load_overlay_js();
      $confirmation_body = field_get_items('node', $node, 'field_confirmation_body');
      $confirmation_body = field_view_value('node', $node, 'field_confirmation_body', $confirmation_body[0]);
      $node->content['confirmation_box']  = array(
        '#theme' => 'superpoll_confirmation',
        '#html' => render($confirmation_body),
        '#node' => $node,
      );
    }
  }

}