function node_feed in Drupal 7

Same name and namespace in other branches

1. 4 modules/node.module \node_feed()
2. 5 modules/node/node.module \node_feed()
3. 6 modules/node/node.module \node_feed()

Generates and prints an RSS feed.

Generates an RSS feed from an array of node IDs, and prints it with an HTTP header, with Content Type set to RSS/XML.

Parameters

$nids: An array of node IDs (nid). Defaults to FALSE so empty feeds can be generated with passing an empty array, if no items are to be added to the feed.

$channel: An associative array containing title, link, description and other keys, to be parsed by format_rss_channel() and format_xml_elements(). A list of channel elements can be found at the RSS 2.0 Specification. The link should be an absolute URL.

4 calls to node_feed()

blog_feed_last in modules/blog/blog.pages.inc

Menu callback; displays an RSS feed containing recent blog entries of all users.

blog_feed_user in modules/blog/blog.pages.inc

Menu callback; displays an RSS feed containing recent blog entries of a given user.

NodeFeedTestCase::testNodeFeedExtraChannelElements in modules/node/node.test

Ensures that node_feed() accepts and prints extra channel elements.

taxonomy_term_feed in modules/taxonomy/taxonomy.pages.inc

Generate the content feed for a taxonomy term.

1 string reference to 'node_feed'

node_menu in modules/node/node.module

Implements hook_menu().

File

modules/node/node.module, line 2575

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_feed($nids = FALSE, $channel = array()) {
  global $base_url, $language_content;
  if ($nids === FALSE) {
    $nids = db_select('node', 'n')
      ->fields('n', array(
      'nid',
      'created',
    ))
      ->condition('n.promote', 1)
      ->condition('n.status', 1)
      ->orderBy('n.created', 'DESC')
      ->range(0, variable_get('feed_default_items', 10))
      ->addTag('node_access')
      ->execute()
      ->fetchCol();
  }
  $item_length = variable_get('feed_item_length', 'fulltext');
  $namespaces = array(
    'xmlns:dc' => 'http://purl.org/dc/elements/1.1/',
  );

  // Load all nodes to be rendered.
  $nodes = node_load_multiple($nids);
  $items = '';
  foreach ($nodes as $node) {
    $item_text = '';
    $node->link = url("node/{$node->nid}", array(
      'absolute' => TRUE,
    ));
    $node->rss_namespaces = array();
    $account = user_load($node->uid);
    $node->rss_elements = array(
      array(
        'key' => 'pubDate',
        'value' => gmdate('r', $node->created),
      ),
      array(
        'key' => 'dc:creator',
        'value' => format_username($account),
      ),
      array(
        'key' => 'guid',
        'value' => $node->nid . ' at ' . $base_url,
        'attributes' => array(
          'isPermaLink' => 'false',
        ),
      ),
    );

    // The node gets built and modules add to or modify $node->rss_elements
    // and $node->rss_namespaces.
    $build = node_view($node, 'rss');
    unset($build['#theme']);
    if (!empty($node->rss_namespaces)) {
      $namespaces = array_merge($namespaces, $node->rss_namespaces);
    }
    if ($item_length != 'title') {

      // We render node contents and force links to be last.
      $build['links']['#weight'] = 1000;
      $item_text .= drupal_render($build);
    }
    $items .= format_rss_item($node->title, $node->link, $item_text, $node->rss_elements);
  }
  $channel_defaults = array(
    'version' => '2.0',
    'title' => variable_get('site_name', 'Drupal'),
    'link' => $base_url,
    'description' => variable_get('feed_description', ''),
    'language' => $language_content->language,
  );
  $channel_extras = array_diff_key($channel, $channel_defaults);
  $channel = array_merge($channel_defaults, $channel);
  $output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
  $output .= "<rss version=\"" . $channel["version"] . "\" xml:base=\"" . $base_url . "\" " . drupal_attributes($namespaces) . ">\n";
  $output .= format_rss_channel($channel['title'], $channel['link'], $channel['description'], $items, $channel['language'], $channel_extras);
  $output .= "</rss>\n";
  drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
  print $output;
}