5 * Hooks provided by the Search module.
14 * Preprocess text for search.
16 * This hook is called to preprocess both the text added to the search index
17 * and the keywords users have submitted for searching. The same processing
18 * needs to be applied to both so that searches will find matches.
21 * - Adding spaces between words of Chinese or Japanese text.
22 * - Stemming words down to their root words to allow matches between, for
23 * instance, walk, walked, walking, and walks in searching.
24 * - Expanding abbreviations and acronyms that occur in text.
27 * The text to preprocess. This is a single piece of plain text extracted
28 * from between two HTML tags or from the search query. It will not contain
29 * any HTML entities or HTML tags.
30 * @param string|null $langcode
31 * The language code for the language the text is in, if known. When this hook
32 * is invoked during search indexing, the language will most likely be known
33 * and passed in. This is left up to the search plugin;
34 * \Drupal\node\Plugin\Search\NodeSearch does pass in the node
35 * language. However, when this hook is invoked during searching, in order to
36 * let a module apply the same preprocessing to the search keywords and
37 * indexed text so they will match, $langcode will be NULL. A hook
38 * implementation can call the getCurrentLanguage() method on the
39 * 'language_manager' service to determine the current language and act
43 * The text after preprocessing. Note that if your module decides not to
44 * alter the text, it should return the original text. Also, after
45 * preprocessing, words in the text should be separated by a space.
49 function hook_search_preprocess($text, $langcode = NULL) {
50 // If the language is not set, get it from the language manager.
51 if (!isset($langcode)) {
52 $langcode = \Drupal::languageManager()->getCurrentLanguage()->getId();
55 // If the langcode is set to 'en' then add variations of the word "testing"
56 // which can also be found during English language searches.
57 if ($langcode == 'en') {
58 // Add the alternate verb forms for the word "testing".
59 if ($text == 'we are testing') {
60 $text .= ' test tested';
68 * Alter search plugin definitions.
70 * @param array $definitions
71 * The array of search plugin definitions, keyed by plugin ID.
73 * @see \Drupal\search\Annotation\SearchPlugin
74 * @see \Drupal\search\SearchPluginManager
76 function hook_search_plugin_alter(array &$definitions) {
77 if (isset($definitions['node_search'])) {
78 $definitions['node_search']['title'] = t('Nodes');
83 * @} End of "addtogroup hooks".