public function ResetFacetsProcessor::build in Facets 8

Alter the items in the summary before creating the renderable array.

Parameters

\Drupal\facets_summary\FacetsSummaryInterface $facet: The facet being changed.

array $build: The render array.

\Drupal\facets\FacetInterface[] $facets: The facets that are available.

Return value

array The render array.

Overrides BuildProcessorInterface::build

File

modules/facets_summary/src/Plugin/facets_summary/processor/ResetFacetsProcessor.php, line 29

Class

ResetFacetsProcessor

Provides a processor that adds a link to reset facet filters.

Namespace

Drupal\facets_summary\Plugin\facets_summary\processor

Code

public function build(FacetsSummaryInterface $facets_summary, array $build, array $facets) {
  $configuration = $facets_summary
    ->getProcessorConfigs()[$this
    ->getPluginId()];
  $hasReset = FALSE;

  // Do nothing if there are no selected facets.
  if (empty($build['#items'])) {
    return $build;
  }
  $request = \Drupal::requestStack()
    ->getMasterRequest();
  $query_params = $request->query
    ->all();

  // Bypass all active facets and remove them from the query parameters array.
  foreach ($facets as $facet) {
    $url_alias = $facet
      ->getUrlAlias();
    $filter_key = $facet
      ->getFacetSourceConfig()
      ->getFilterKey() ?: 'f';
    if ($facet
      ->getActiveItems()) {

      // This removes query params when using the query url processor.
      if (isset($query_params[$filter_key])) {
        foreach ($query_params[$filter_key] as $delta => $param) {
          if (strpos($param, $url_alias . ':') !== FALSE) {
            unset($query_params[$filter_key][$delta]);
          }
        }
        if (!$query_params[$filter_key]) {
          unset($query_params[$filter_key]);
        }
      }
      $hasReset = TRUE;
    }
  }
  if (!$hasReset) {
    return $build;
  }
  $url = Url::fromUserInput($facets_summary
    ->getFacetSource()
    ->getPath());
  $url
    ->setOptions([
    'query' => $query_params,
  ]);

  // Check if reset link text is not set or it contains only whitespaces.
  // Set text from settings or set default text.
  if (empty($configuration['settings']['link_text']) || strlen(trim($configuration['settings']['link_text'])) === 0) {
    $itemText = t('Reset');
  }
  else {
    $itemText = $configuration['settings']['link_text'];
  }
  $item = (new Link($itemText, $url))
    ->toRenderable();
  $item['#wrapper_attributes'] = [
    'class' => [
      'facet-summary-item--clear',
    ],
  ];
  array_unshift($build['#items'], $item);
  return $build;
}