protected function Highlight::getKeywords in Search API 8

Extracts the positive keywords used in a search query.

Parameters

\Drupal\search_api\Query\QueryInterface $query: The query from which to extract the keywords.

Return value

string[] An array of all unique positive keywords used in the query.

1 call to Highlight::getKeywords()

Highlight::postprocessSearchResults in src/Plugin/search_api/processor/Highlight.php

Postprocess search results before they are returned by the query.

File

src/Plugin/search_api/processor/Highlight.php, line 386

Class

Highlight

Adds a highlighted excerpt to results and highlights returned fields.

Namespace

Drupal\search_api\Plugin\search_api\processor

Code

protected function getKeywords(QueryInterface $query) {
  $keys = $query
    ->getOriginalKeys();
  if (!$keys) {
    return [];
  }
  if (is_array($keys)) {
    return $this
      ->flattenKeysArray($keys);
  }
  $keywords_in = preg_split(static::$split, $keys);
  if (!$keywords_in) {
    return [];
  }

  // Assure there are no duplicates. (This is actually faster than
  // array_unique() by a factor of 3 to 4.)
  // Remove quotes from keywords.
  $keywords = [];
  foreach (array_filter($keywords_in) as $keyword) {
    if ($keyword = trim($keyword, "'\"")) {
      $keywords[$keyword] = $keyword;
    }
  }
  return $keywords;
}