function node_ranking in Drupal 7

Same name and namespace in other branches

1. 8 core/modules/node/node.module \node_ranking()
2. 9 core/modules/node/node.module \node_ranking()
3. 10 core/modules/node/node.module \node_ranking()

Implements hook_ranking().

File

modules/node/node.module, line 1759

The core that allows content to be submitted to the site. Modules and scripts may programmatically submit nodes using the usual form API pattern.

Code

function node_ranking() {

  // Create the ranking array and add the basic ranking options.
  $ranking = array(
    'relevance' => array(
      'title' => t('Keyword relevance'),
      // Average relevance values hover around 0.15
      'score' => 'i.relevance',
    ),
    'sticky' => array(
      'title' => t('Content is sticky at top of lists'),
      // The sticky flag is either 0 or 1, which is automatically normalized.
      'score' => 'n.sticky',
    ),
    'promote' => array(
      'title' => t('Content is promoted to the front page'),
      // The promote flag is either 0 or 1, which is automatically normalized.
      'score' => 'n.promote',
    ),
  );

  // Add relevance based on creation or changed date.
  if ($node_cron_last = variable_get('node_cron_last', 0)) {
    $ranking['recent'] = array(
      'title' => t('Recently posted'),
      // Exponential decay with half-life of 6 months, starting at last indexed node
      'score' => 'POW(2.0, (GREATEST(n.created, n.changed) - :node_cron_last) * 6.43e-8)',
      'arguments' => array(
        ':node_cron_last' => $node_cron_last,
      ),
    );
  }
  return $ranking;
}