function _biblio_search_execute in Bibliography Module 7

Same name and namespace in other branches

1. 7.2 includes/biblio.search.inc \_biblio_search_execute()

Execute a search for a set of key words.

Use database API with the 'PagerDefault' query extension to perform your search.

If your module uses hook_update_index() and search_index() to index its items, use table 'search_index' aliased to 'i' as the main table in your query, with the 'SearchQuery' extension. You can join to your module's table using the 'i.sid' field, which will contain the $sid values you provided to search_index(). Add the main keywords to the query by using method searchExpression(). The functions search_expression_extract() and search_expression_insert() may also be helpful for adding custom search parameters to the search expression.

See node_search_execute() for an example of a module that uses the search index, and user_search_execute() for an example that doesn't ues the search index.

Parameters

$keys: The search keywords as entered by the user.

$conditions: An optional array of additional conditions, such as filters.

Return value

An array of search results. To use the default search result display, each item should have the following keys':

• 'link': Required. The URL of the found item.
• 'type': The type of item (such as the content type).
• 'title': Required. The name of the item.
• 'user': The author of the item.
• 'date': A timestamp when the item was last modified.
• 'extra': An array of optional extra information items.
• 'snippet': An excerpt or preview to show with the result (can be generated with search_excerpt()).
• 'language': Language code for the item (usually two characters).

File

includes/biblio.search.inc, line 146

Code

function _biblio_search_execute($keys = NULL, $conditions = NULL) {

  // Build matching conditions.
  $query = db_select('search_index', 'i', array(
    'target' => 'slave',
  ))
    ->extend('SearchQuery')
    ->extend('PagerDefault');
  $query
    ->join('node', 'n', 'n.nid = i.sid');
  $query
    ->condition('n.status', 1)
    ->addTag('node_access')
    ->searchExpression($keys, 'node');

  // Insert special keywords.
  $query
    ->setOption('type', 'n.type');
  $query
    ->setOption('language', 'n.language');
  if ($query
    ->setOption('term', 'ti.tid')) {
    $query
      ->join('taxonomy_index', 'ti', 'n.nid = ti.nid');
  }

  // Only continue if the first pass query matches.
  if (!$query
    ->executeFirstPass()) {
    return array();
  }

  // Add the ranking expressions.
  _node_rankings($query);

  // Load results.
  $find = $query
    ->limit(10)
    ->execute();
  $results = array();
  foreach ($find as $item) {

    // Build the node body.
    $node = node_load($item->sid);
    node_build_content($node, 'search_result');
    $node->body = drupal_render($node->content);

    // Fetch comments for snippet.
    $node->rendered .= ' ' . module_invoke('comment', 'node_update_index', $node);

    // Fetch terms for snippet.
    $node->rendered .= ' ' . module_invoke('taxonomy', 'node_update_index', $node);
    $extra = module_invoke_all('node_search_result', $node);
    $results[] = array(
      'link' => url('node/' . $item->sid, array(
        'absolute' => TRUE,
      )),
      'type' => check_plain(node_type_get_name($node)),
      'title' => $node->title,
      'user' => theme('username', array(
        'account' => $node,
      )),
      'date' => $node->changed,
      'node' => $node,
      'extra' => $extra,
      'score' => $item->calculated_score,
      'snippet' => search_excerpt($keys, $node->body),
    );
  }
  return $results;
}