function aggregator_block in Drupal 6

Same name and namespace in other branches

1. 4 modules/aggregator.module \aggregator_block()
2. 5 modules/aggregator/aggregator.module \aggregator_block()

Implementation of hook_block().

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

File

modules/aggregator/aggregator.module, line 300

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

Code

function aggregator_block($op = 'list', $delta = 0, $edit = array()) {
  if ($op == 'list') {
    $result = db_query('SELECT cid, title FROM {aggregator_category} ORDER BY title');
    while ($category = db_fetch_object($result)) {
      $block['category-' . $category->cid]['info'] = t('!title category latest items', array(
        '!title' => $category->title,
      ));
    }
    $result = db_query('SELECT fid, title FROM {aggregator_feed} ORDER BY fid');
    while ($feed = db_fetch_object($result)) {
      $block['feed-' . $feed->fid]['info'] = t('!title feed latest items', array(
        '!title' => $feed->title,
      ));
    }
  }
  else {
    if ($op == 'configure') {
      list($type, $id) = explode('-', $delta);
      if ($type == 'category') {
        $value = db_result(db_query('SELECT block FROM {aggregator_category} WHERE cid = %d', $id));
      }
      else {
        $value = db_result(db_query('SELECT block FROM {aggregator_feed} WHERE fid = %d', $id));
      }
      $form['block'] = array(
        '#type' => 'select',
        '#title' => t('Number of news items in block'),
        '#default_value' => $value,
        '#options' => drupal_map_assoc(array(
          2,
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          12,
          13,
          14,
          15,
          16,
          17,
          18,
          19,
          20,
        )),
      );
      return $form;
    }
    else {
      if ($op == 'save') {
        list($type, $id) = explode('-', $delta);
        if ($type == 'category') {
          $value = db_query('UPDATE {aggregator_category} SET block = %d WHERE cid = %d', $edit['block'], $id);
        }
        else {
          $value = db_query('UPDATE {aggregator_feed} SET block = %d WHERE fid = %d', $edit['block'], $id);
        }
      }
      else {
        if ($op == 'view') {
          if (user_access('access news feeds')) {
            list($type, $id) = explode('-', $delta);
            switch ($type) {
              case 'feed':
                if ($feed = db_fetch_object(db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE fid = %d', $id))) {
                  $block['subject'] = check_plain($feed->title);
                  $result = db_query_range('SELECT * FROM {aggregator_item} WHERE fid = %d ORDER BY timestamp DESC, iid DESC', $feed->fid, 0, $feed->block);
                  $read_more = theme('more_link', url('aggregator/sources/' . $feed->fid), t("View this feed's recent news."));
                }
                break;
              case 'category':
                if ($category = db_fetch_object(db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = %d', $id))) {
                  $block['subject'] = check_plain($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 = %d ORDER BY i.timestamp DESC, i.iid DESC', $category->cid, 0, $category->block);
                  $read_more = theme('more_link', url('aggregator/categories/' . $category->cid), t("View this category's recent news."));
                }
                break;
            }
            $items = array();
            while ($item = db_fetch_object($result)) {
              $items[] = theme('aggregator_block_item', $item);
            }

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