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<?php
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// $Id: drupalorg_news.module,v 1.15 2009/08/26 07:15:30 drumm Exp $
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/**
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* @file
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* Custom code for the news page, planet Drupal and similar pages.
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*/
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/**
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* Vocabulary used for news forum topic tagging.
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*/
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define('DRUPALORG_NEWS_VID', 34);
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/**
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* Planet Drupal category in the aggregator.
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*/
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define('DRUPALORG_PLANET_CATEGORY', 2);
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// == Core hooks ===============================================================
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/**
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* Implementation of hook_menu().
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*/
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function drupalorg_news_menu() {
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$items['news'] = array(
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'title' => 'News',
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'page callback' => 'drupalorg_news_page',
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'access arguments' => array('access content'),
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'type' => MENU_CALLBACK,
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);
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$items['news/%drupalorg_news_term'] = array(
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'title' => 'News',
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'page callback' => 'drupalorg_news_page',
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'page arguments' => array(1),
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'access arguments' => array('access content'),
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'type' => MENU_CALLBACK,
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);
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return $items;
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}
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/**
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* Menu loader. Load news term if it is indeed from the given vocabulary.
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*/
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function drupalorg_news_term_load($tid) {
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if (($term = taxonomy_get_term($tid)) && ($term->vid = DRUPALORG_NEWS_VID)) {
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return $term;
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}
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return NULL;
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}
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/**
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* One of the most visited pages of the site, so hardcode queries.
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*/
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function drupalorg_news_page($term) {
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if (!isset($tid)) {
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$result = pager_query(db_rewrite_sql('SELECT n.nid, n.sticky, n.created FROM {node} n WHERE n.promote = 1 AND n.status = 1 ORDER BY n.sticky DESC, n.created DESC'), variable_get('default_nodes_main', 10));
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// Add existing "front page" feed if main news page.
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$feed_url = url('rss.xml', array('absolute' => TRUE));
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drupal_add_feed($feed_url, variable_get('site_name', 'Drupal') .' '. t('RSS'));
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}
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else {
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$result = pager_query(db_rewrite_sql('SELECT n.nid, n.sticky, n.created FROM {node} n LEFT JOIN {term_node} t ON t.vid = n.vid WHERE n.promote = 1 AND n.status = 1 AND t.tid = %d ORDER BY n.sticky DESC, n.created DESC'), variable_get('default_nodes_main', 10), 0, NULL, $term->tid);
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}
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$output = '';
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while ($node = db_fetch_object($result)) {
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$output .= node_view(node_load($node->nid), 1);
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}
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$output .= theme('pager', NULL, variable_get('default_nodes_main', 10));
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return $output;
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}
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// == Altering existing behavior ===============================================
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/**
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* Implementation of hook_form_alter().
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*/
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function drupalorg_news_form_alter(&$form, $form_state, $form_id) {
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// Remove the news vocabulary on forum forms, if the user is not an admin.
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// Used to mark news forum topics with tags.
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if ($form_id == 'forum_node_form') {
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$form['taxonomy'][DRUPALORG_NEWS_VID]['#access'] = user_access('administer nodes');
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}
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}
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/**
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* Implementation of template_preprocess_drupalorg_home().
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*
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* @todo
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* Add caching.
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*/
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function drupalorg_news_preprocess_drupalorg_home(&$vars) {
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// Get the first three news items ordered by descending publication date.
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$result = db_query_range('SELECT nid FROM {node} WHERE promote = 1 ORDER BY created DESC', array(), 0, 4);
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$fresh_news = '';
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$news_count = 0;
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while ($nid = db_fetch_object($result)) {
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$node = node_load($nid->nid);
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if ($news_count == 0) {
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// The first news item has a blurb displayed.
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$fresh_news .= '<h6>'. l($node->title, 'node/'. $node->nid) .'</h6>';
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$fresh_news .= '<p class="submitted">'. format_date($node->created, 'custom', 'F j, Y') .'</p>';
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// Cut it to short and sweet to fit into the design. Strip all tags,
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// so things like big images, distracting links and paragraph tags will
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// not end up here. The text should be good in itself to display.
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$fresh_news .= '<p>'. node_teaser(strip_tags($node->teaser), $node->format, 180) .' '. l(t('Read more'), 'node/'. $node->nid) .'</p>';
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}
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else {
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// Rest of the items have just their title displayed.
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$fresh_news .= '<p>'. l($node->title, 'node/'. $node->nid) .'</p>';
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}
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$news_count++;
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}
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// Finally, we have a link to the rest of the items
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$fresh_news .= '<p>'. l(t('More news...'), 'news') .'</p>';
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$vars['tab_content_news'] = $fresh_news;
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}
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// == Blocks for news and planet ===============================================
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/**
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* Implementation of hook_block().
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*/
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function drupalorg_news_block($op = 'list', $delta = 0, $edit = array()) {
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switch ($op) {
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case 'list':
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$blocks['planet-list']['info'] = t('Planet Drupal subscriptions');
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$blocks['news-terms']['info'] = t('News category filter links');
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return $blocks;
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case 'view':
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switch ($delta) {
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case 'planet-list':
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$block['subject'] = t('Planet Drupal subscriptions');
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$block['content'] = drupalorg_news_planet_drupal_block();
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return $block;
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case 'news-terms':
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$block['subject'] = t('Filter news');
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$block['content'] = drupalorg_news_filter_news();
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return $block;
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}
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}
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}
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/**
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* Block to show the list of sources for the Planet as well as their count.
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*/
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function drupalorg_news_planet_drupal_block() {
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$output = '';
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$description = db_result(db_query("SELECT description FROM aggregator_category WHERE cid = %d", DRUPALORG_PLANET_CATEGORY));
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$result = db_query('SELECT f.* FROM {aggregator_feed} f JOIN {aggregator_category_feed} c ON f.fid = c.fid WHERE c.cid = %d ORDER BY f.title', DRUPALORG_PLANET_CATEGORY);
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$list = '<div class="item-list"><ul>';
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$counter = 0;
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while ($feed = db_fetch_object($result)) {
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$list .= '<li>'. l($feed->title, $feed->link) .' ('. l('feed', $feed->url) .')</li>';
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$counter++;
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}
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$list .= '</ul></div>';
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$output .= '<p>'. filter_xss_admin($description) .' '. t('Collecting posts from the following @num sources:', array('@num' => $counter)) .'</p>';
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$output .= $list;
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$output .= theme('xml_icon', url('planet/rss.xml'));
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return $output;
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}
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/**
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* News filtering by taxonomy term for the frontpage.
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*/
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function drupalorg_news_filter_news() {
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$tree = taxonomy_get_tree(DRUPALORG_NEWS_VID);
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$list_of_terms = array(array('title' => t('All news'), 'href' => 'news'));
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foreach ($tree as $term) {
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$list_of_terms[] = array('title' => $term->name, 'href' => 'news/'. $term->tid);
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}
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// Using theme links should mark active links with a class, so styling
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// can be applied to them properly.
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return theme('links', $list_of_terms);
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}
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