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root / drupal7 / modules / taxonomy / taxonomy.pages.inc @ db2d93dd

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<?php
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/**
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 * @file
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 * Page callbacks for the taxonomy module.
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 */
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/**
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 * Menu callback; displays all nodes associated with a term.
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 *
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 * @param $term
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 *   The taxonomy term.
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 * @return
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 *   The page content.
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 */
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function taxonomy_term_page($term) {
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  // If there is a menu link to this term, the link becomes the last part of
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  // the active trail, and the link name becomes the page title. Thus, we must
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  // explicitly set the page title to be the term title.
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  drupal_set_title($term->name);
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  // Build breadcrumb based on the hierarchy of the term.
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  $current = (object) array(
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    'tid' => $term->tid,
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  );
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  // @todo This overrides any other possible breadcrumb and is a pure hard-coded
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  //   presumption. Make this behavior configurable per vocabulary or term.
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  $breadcrumb = array();
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  while ($parents = taxonomy_get_parents($current->tid)) {
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    $current = array_shift($parents);
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    $breadcrumb[] = l($current->name, 'taxonomy/term/' . $current->tid);
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  }
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  $breadcrumb[] = l(t('Home'), NULL);
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  $breadcrumb = array_reverse($breadcrumb);
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  drupal_set_breadcrumb($breadcrumb);
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  drupal_add_feed('taxonomy/term/' . $term->tid . '/feed', 'RSS - ' . $term->name);
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  // Set the term path as the canonical URL to prevent duplicate content.
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  $uri = entity_uri('taxonomy_term', $term);
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  drupal_add_html_head_link(array('rel' => 'canonical', 'href' => url($uri['path'], $uri['options'])), TRUE);
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  // Set the non-aliased path as a default shortlink.
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  drupal_add_html_head_link(array('rel' => 'shortlink', 'href' => url($uri['path'], array_merge($uri['options'], array('alias' => TRUE)))), TRUE);
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  // Normally we would call taxonomy_term_show() here, but for backwards
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  // compatibility in Drupal 7 we do not want to do that (it produces different
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  // data structures and HTML markup than what Drupal 7 released with). Calling
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  // taxonomy_term_view() directly provides essentially the same thing, but
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  // allows us to wrap the rendered term in our desired array structure.
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  $build['term_heading'] = array(
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    '#prefix' => '<div class="term-listing-heading">',
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    '#suffix' => '</div>',
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    'term' => taxonomy_term_view($term, 'full'),
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  );
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  if ($nids = taxonomy_select_nodes($term->tid, TRUE, variable_get('default_nodes_main', 10))) {
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    $nodes = node_load_multiple($nids);
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    $build += node_view_multiple($nodes);
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    $build['pager'] = array(
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      '#theme' => 'pager',
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      '#weight' => 5,
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    );
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  }
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  else {
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    $build['no_content'] = array(
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      '#prefix' => '<p>',
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      '#markup' => t('There is currently no content classified with this term.'),
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      '#suffix' => '</p>',
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    );
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  }
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  return $build;
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}
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/**
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 * Generate the content feed for a taxonomy term.
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 *
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 * @param $term
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 *   The taxonomy term.
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 */
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function taxonomy_term_feed($term) {
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  $channel['link'] = url('taxonomy/term/' . $term->tid, array('absolute' => TRUE));
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  $channel['title'] = variable_get('site_name', 'Drupal') . ' - ' . $term->name;
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  // Only display the description if we have a single term, to avoid clutter and confusion.
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  // HTML will be removed from feed description.
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  $channel['description'] = check_markup($term->description, $term->format, '', TRUE);
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  $nids = taxonomy_select_nodes($term->tid, FALSE, variable_get('feed_default_items', 10));
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  node_feed($nids, $channel);
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}
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/**
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 * Page callback: Outputs JSON for taxonomy autocomplete suggestions.
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 *
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 * Path: taxonomy/autocomplete
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 *
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 * This callback outputs term name suggestions in response to Ajax requests
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 * made by the taxonomy autocomplete widget for taxonomy term reference
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 * fields. The output is a JSON object of plain-text term suggestions, keyed by
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 * the user-entered value with the completed term name appended.  Term names
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 * containing commas are wrapped in quotes.
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 *
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 * For example, suppose the user has entered the string 'red fish, blue' in the
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 * field, and there are two taxonomy terms, 'blue fish' and 'blue moon'. The
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 * JSON output would have the following structure:
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 * @code
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 *   {
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 *     "red fish, blue fish": "blue fish",
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 *     "red fish, blue moon": "blue moon",
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 *   };
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 * @endcode
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 *
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 * @param $field_name
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 *   The name of the term reference field.
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 * @param $tags_typed
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 *   (optional) A comma-separated list of term names entered in the
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 *   autocomplete form element. Only the last term is used for autocompletion.
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 *   Defaults to '' (an empty string).
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 *
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 * @see taxonomy_menu()
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 * @see taxonomy_field_widget_info()
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 */
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function taxonomy_autocomplete($field_name = '', $tags_typed = '') {
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  // If the request has a '/' in the search text, then the menu system will have
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  // split it into multiple arguments, recover the intended $tags_typed.
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  $args = func_get_args();
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  // Shift off the $field_name argument.
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  array_shift($args);
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  $tags_typed = implode('/', $args);
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  // Make sure the field exists and is a taxonomy field.
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  if (!($field = field_info_field($field_name)) || $field['type'] !== 'taxonomy_term_reference') {
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    // Error string. The JavaScript handler will realize this is not JSON and
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    // will display it as debugging information.
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    print t('Taxonomy field @field_name not found.', array('@field_name' => $field_name));
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    exit;
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  }
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  // The user enters a comma-separated list of tags. We only autocomplete the last tag.
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  $tags_typed = drupal_explode_tags($tags_typed);
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  $tag_last = drupal_strtolower(array_pop($tags_typed));
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  $term_matches = array();
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  if ($tag_last != '') {
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    // Part of the criteria for the query come from the field's own settings.
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    $vids = array();
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    $vocabularies = taxonomy_vocabulary_get_names();
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    foreach ($field['settings']['allowed_values'] as $tree) {
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      $vids[] = $vocabularies[$tree['vocabulary']]->vid;
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    }
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    $query = db_select('taxonomy_term_data', 't');
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    $query->addTag('translatable');
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    $query->addTag('term_access');
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    // Do not select already entered terms.
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    if (!empty($tags_typed)) {
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      $query->condition('t.name', $tags_typed, 'NOT IN');
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    }
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    // Select rows that match by term name.
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    $tags_return = $query
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      ->fields('t', array('tid', 'name'))
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      ->condition('t.vid', $vids)
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      ->condition('t.name', '%' . db_like($tag_last) . '%', 'LIKE')
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      ->range(0, 10)
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      ->execute()
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      ->fetchAllKeyed();
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    $prefix = count($tags_typed) ? drupal_implode_tags($tags_typed) . ', ' : '';
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    foreach ($tags_return as $tid => $name) {
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      $n = $name;
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      // Term names containing commas or quotes must be wrapped in quotes.
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      if (strpos($name, ',') !== FALSE || strpos($name, '"') !== FALSE) {
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        $n = '"' . str_replace('"', '""', $name) . '"';
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      }
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      $term_matches[$prefix . $n] = check_plain($name);
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    }
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  }
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  drupal_json_output($term_matches);
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}