public function AlphaPaginationGroup::render in Views Alpha Pagination 8.2

Renders the field.

Parameters

\Drupal\views\ResultRow $values: The values retrieved from a single row of a view's query result.

Return value

string|\Drupal\Component\Render\MarkupInterface The rendered output. If the output is safe it will be wrapped in an object that implements MarkupInterface. If it is empty or unsafe it will be a string.

Overrides FieldPluginBase::render

File

src/Plugin/views/field/AlphaPaginationGroup.php, line 108

Class

AlphaPaginationGroup

A handler to provide a field that generates alpha pagination values.

Namespace

Drupal\alpha_pagination\Plugin\views\field

Code

public function render(ResultRow $values) {
  $areas = $this->alphaPagination
    ->getAreaHandlers();

  // Immediately return if there is no handler.
  if (!$areas) {
    return '';
  }
  $this->alphaPagination
    ->setHandler($areas[0]);
  $path = $this->alphaPagination
    ->getOption('paginate_link_path');
  list($entityType, $field_name) = explode('__', $this->alphaPagination
    ->getOption('paginate_view_field'), 2);
  if (!isset($this->view->field[$field_name])) {
    return '';
  }

  /** @var Drupal\views\Plugin\views\field\FieldPluginBase $field */
  $field = $this->view->field[$field_name];

  // Render field if it hasn't already.
  if (empty($field->last_render)) {
    $field
      ->renderText($values);
  }

  // Return just the first character of the value.
  $value = $this->alphaPagination
    ->getValue(!empty($field->last_render) ? Unicode::ucfirst(substr(strip_tags($field->last_render), 0, 1)) : '');
  $label = $this->alphaPagination
    ->getLabel($value);

  // Prepend an anchor if the link path starts with #. Using the "link"
  // element will cause an empty href attribute to be printed. This can cause
  // issues with certain JavaScript or CSS styling that targets if that
  // attribute is simply present, regardless if it's empty. To avoid that,
  // use the "html_tag" type so only the name attribute is printed.
  if ($value && $path && $path[0] === '#') {
    $name = $this->token
      ->replace(substr($path, 1), $this->alphaPagination
      ->getTokens($value));
    $label = [
      '#type' => 'html_tag',
      '#theme' => 'html_tag__alpha_pagination__anchor',
      '#tag' => 'a',
      '#value' => '',
      '#attributes' => [
        'name' => $name,
      ],
      '#suffix' => $label,
    ];
  }
  return $label;
}