function node_ranking

Implements hook_ranking().

File

modules/node/node.module, line 1759

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;
}