class PagerParameters in Drupal 8

Provides pager information contained within the current request.

Hierarchy

• class \Drupal\Core\Pager\PagerParameters implements PagerParametersInterface

See also

\Drupal\Core\Pager\PagerManagerInterface

1 file declares its use of PagerParameters

SqlBase.php in core/modules/views/src/Plugin/views/pager/SqlBase.php

1 string reference to 'PagerParameters'

core.services.yml in core/core.services.yml

core/core.services.yml

1 service uses PagerParameters

pager.parameters in core/core.services.yml

Drupal\Core\Pager\PagerParameters

File

core/lib/Drupal/Core/Pager/PagerParameters.php, line 13

Namespace

Drupal\Core\Pager

class PagerParameters implements PagerParametersInterface {

  /**
   * The HTTP request stack.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;

  /**
   * Construct a PagerManager object.
   *
   * @param \Symfony\Component\HttpFoundation\RequestStack $stack
   *   The current HTTP request stack.
   */
  public function __construct(RequestStack $stack) {
    $this->requestStack = $stack;
  }

  /**
   * {@inheritdoc}
   */
  public function getQueryParameters() {
    $request = $this->requestStack
      ->getCurrentRequest();
    if ($request) {
      return UrlHelper::filterQueryParameters($request->query
        ->all(), [
        'page',
      ]);
    }
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function findPage($pager_id = 0) {
    $pages = $this
      ->getPagerQuery();
    return (int) ($pages[$pager_id] ?? 0);
  }

  /**
   * {@inheritdoc}
   */
  public function getPagerQuery() {
    $query = $this
      ->getPagerParameter();
    return !empty($query) ? explode(',', $query) : [];
  }

  /**
   * {@inheritdoc}
   */
  public function getPagerParameter() {
    $request = $this->requestStack
      ->getCurrentRequest();
    if ($request) {
      return $request->query
        ->get('page', '');
    }
    return '';
  }

}

Members

Name	Modifiers	Type	Description	Overrides
PagerParameters::$requestStack	protected	property	The HTTP request stack.
PagerParameters::findPage	public	function	Returns the current page being requested for display within a pager. Overrides PagerParametersInterface::findPage
PagerParameters::getPagerParameter	public	function	Gets the 'page' query parameter for the current request. Overrides PagerParametersInterface::getPagerParameter
PagerParameters::getPagerQuery	public	function	Gets the request query parameter. Overrides PagerParametersInterface::getPagerQuery
PagerParameters::getQueryParameters	public	function	Gets all request URL query parameters that are unrelated to paging. Overrides PagerParametersInterface::getQueryParameters
PagerParameters::__construct	public	function	Construct a PagerManager object.