node_feed

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modules/node/node.module, строка 1902

Версии
5
node_feed($nodes = 0, $channel = array())
6
node_feed($nids = FALSE, $channel = array())

A generic function for generating RSS feeds from a set of nodes.

Параметры

$nodes An object as returned by db_query() which contains the nid field.

$channel An associative array containing title, link, description and other keys. The link should be an absolute URL.

▾ 3 функции вызывают node_feed()

blog_feed_last in modules/blog/blog.module
Displays an RSS feed containing recent blog entries of all users.
blog_feed_user in modules/blog/blog.module
Displays an RSS feed containing recent blog entries of a given user.
taxonomy_term_page in modules/taxonomy/taxonomy.module
Menu callback; displays all nodes associated with a term.

Код

<?php
function node_feed($nodes = 0, $channel = array()) {
  global $base_url, $locale;

  if (!$nodes) {
    $nodes = db_query_range(db_rewrite_sql('SELECT n.nid, n.created FROM {node} n WHERE n.promote = 1 AND n.status = 1 ORDER BY n.created DESC'), 0, variable_get('feed_default_items', 10));
  }

  $item_length = variable_get('feed_item_length', 'teaser');
  $namespaces = array('xmlns:dc="http://purl.org/dc/elements/1.1/"');

  while ($node = db_fetch_object($nodes)) {
    // Load the specified node:
    $item = node_load($node->nid);
    $link = url("node/$node->nid", NULL, NULL, 1);

    if ($item_length != 'title') {
      $teaser = ($item_length == 'teaser') ? TRUE : FALSE;

      // Filter and prepare node teaser
      if (node_hook($item, 'view')) {
        $item = node_invoke($item, 'view', $teaser, FALSE);
      }
      else {
        $item = node_prepare($item, $teaser);
      }

      // Allow modules to change $node->teaser before viewing.
      node_invoke_nodeapi($item, 'view', $teaser, FALSE);
    }

    // Allow modules to add additional item fields and/or modify $item
    $extra = node_invoke_nodeapi($item, 'rss item');
    $extra = array_merge($extra, array(array('key' => 'pubDate', 'value' => gmdate('r', $item->created)), array('key' => 'dc:creator', 'value' => $item->name), array('key' => 'guid', 'value' => $item->nid .' at '. $base_url, 'attributes' => array('isPermaLink' => 'false'))));
    foreach ($extra as $element) {
      if ($element['namespace']) {
        $namespaces = array_merge($namespaces, $element['namespace']);
      }
    }

    // Prepare the item description
    switch ($item_length) {
      case 'fulltext':
        $item_text = $item->body;
        break;
      case 'teaser':
        $item_text = $item->teaser;
        if ($item->readmore) {
          $item_text .= '<p>'. l(t('read more'), 'node/'. $item->nid, NULL, NULL, NULL, TRUE) .'</p>';
        }
        break;
      case 'title':
        $item_text = '';
        break;
    }

    $items .= format_rss_item($item->title, $link, $item_text, $extra);
  }

  $channel_defaults = array(
    'version'     => '2.0',
    'title'       => variable_get('site_name', 'Drupal') . (variable_get('site_slogan', '') ? ' - '. variable_get('site_slogan', '') : ''),
    'link'        => $base_url,
    'description' => variable_get('site_mission', ''),
    'language'    => $locale
  );
  $channel = array_merge($channel_defaults, $channel);

  $output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
  $output .= "<rss version=\"". $channel["version"] ."\" xml:base=\"". $base_url ."\" ". implode(' ', $namespaces) .">\n";
  $output .= format_rss_channel($channel['title'], $channel['link'], $channel['description'], $items, $channel['language']);
  $output .= "</rss>\n";

  drupal_set_header('Content-Type: application/rss+xml; charset=utf-8');
  print $output;
}
?>
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