function aggregator_block_view in Drupal 7

Implements hook_block_view().

Generates blocks for the latest news items in each category and feed.

File

modules/aggregator/aggregator.module, line 396

Used to aggregate syndicated content (RSS, RDF, and Atom).

Code

function aggregator_block_view($delta = '') {
  if (user_access('access news feeds')) {
    $block = array();
    list($type, $id) = explode('-', $delta);
    $result = FALSE;
    switch ($type) {
      case 'feed':
        if ($feed = db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE block <> 0 AND fid = :fid', array(
          ':fid' => $id,
        ))
          ->fetchObject()) {
          $block['subject'] = check_plain($feed->title);
          $result = db_query_range("SELECT * FROM {aggregator_item} WHERE fid = :fid ORDER BY timestamp DESC, iid DESC", 0, $feed->block, array(
            ':fid' => $id,
          ));
          $read_more = theme('more_link', array(
            'url' => 'aggregator/sources/' . $feed->fid,
            'title' => t("View this feed's recent news."),
          ));
        }
        break;
      case 'category':
        if ($category = db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = :cid', array(
          ':cid' => $id,
        ))
          ->fetchObject()) {
          $block['subject'] = check_plain($category->title);
          $result = db_query_range('SELECT i.* FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON ci.iid = i.iid WHERE ci.cid = :cid ORDER BY i.timestamp DESC, i.iid DESC', 0, $category->block, array(
            ':cid' => $category->cid,
          ));
          $read_more = theme('more_link', array(
            'url' => 'aggregator/categories/' . $category->cid,
            'title' => t("View this category's recent news."),
          ));
        }
        break;
    }
    $items = array();
    if (!empty($result)) {
      foreach ($result as $item) {
        $items[] = theme('aggregator_block_item', array(
          'item' => $item,
        ));
      }
    }

    // Only display the block if there are items to show.
    if (count($items) > 0) {
      $block['content'] = theme('item_list', array(
        'items' => $items,
      )) . $read_more;
    }
    return $block;
  }
}