class Pager

Same name in this branch
  1. 9 core/lib/Drupal/Core/Pager/Pager.php \Drupal\Core\Pager\Pager
Same name and namespace in other branches
  1. 11.x core/lib/Drupal/Core/Render/Element/Pager.php \Drupal\Core\Render\Element\Pager
  2. 11.x core/lib/Drupal/Core/Pager/Pager.php \Drupal\Core\Pager\Pager
  3. 10 core/lib/Drupal/Core/Render/Element/Pager.php \Drupal\Core\Render\Element\Pager
  4. 10 core/lib/Drupal/Core/Pager/Pager.php \Drupal\Core\Pager\Pager
  5. 8.9.x core/lib/Drupal/Core/Render/Element/Pager.php \Drupal\Core\Render\Element\Pager
  6. 8.9.x core/lib/Drupal/Core/Pager/Pager.php \Drupal\Core\Pager\Pager

Provides a render element for a pager.

The pager must be initialized with a call to \Drupal\Core\Pager\PagerManagerInterface::createPager() in order to render properly. When used with database queries, this is performed for you when you extend a select query with \Drupal\Core\Database\Query\PagerSelectExtender.

Properties:

  • #element: (optional, int) The pager ID, to distinguish between multiple pagers on the same page (defaults to 0).
  • #parameters: (optional) An associative array of query string parameters to append to the pager.
  • #quantity: The maximum number of numbered page links to create (defaults to 9).
  • #tags: (optional) An array of labels for the controls in the pages.
  • #route_name: (optional) The name of the route to be used to build pager links. Defaults to '<none>', which will make links relative to the current URL. This makes the page more effectively cacheable.
$build['pager'] = [
  '#type' => 'pager',
];

Plugin annotation

@RenderElement("pager");

Hierarchy

Expanded class hierarchy of Pager

37 string references to 'Pager'
AreaDisplayLinkTest::assertWarningMessages in core/modules/views/tests/src/Kernel/Handler/AreaDisplayLinkTest.php
Assert the warning messages are shown after changing the page_1 display.
AreaDisplayLinkTest::setUp in core/modules/views/tests/src/Kernel/Handler/AreaDisplayLinkTest.php
AreaDisplayLinkTest::testAreaDisplayLink in core/modules/views/tests/src/Kernel/Handler/AreaDisplayLinkTest.php
Tests the views area display_link handler.
Attachment::attachTo in core/modules/views/src/Plugin/views/display/Attachment.php
Attachment::optionsSummary in core/modules/views/src/Plugin/views/display/Attachment.php
Provide the summary for attachment options in the views UI.

... See full list

15 #type uses of Pager
AggregatorController::buildPageList in core/modules/aggregator/src/Controller/AggregatorController.php
Builds a listing of aggregator feed items.
CommentAdminOverview::buildForm in core/modules/comment/src/Form/CommentAdminOverview.php
Form constructor for the comment overview administration form.
DbLogController::overview in core/modules/dblog/src/Controller/DbLogController.php
Displays a listing of database log messages.
DbLogController::topLogMessages in core/modules/dblog/src/Controller/DbLogController.php
Shows the most frequent log messages of a given event type.
EntityListBuilder::render in core/lib/Drupal/Core/Entity/EntityListBuilder.php
Builds the entity listing as renderable array for table.html.twig.

... See full list

File

core/lib/Drupal/Core/Render/Element/Pager.php, line 33

Namespace

Drupal\Core\Render\Element
View source
class Pager extends RenderElement {
  
  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    return [
      '#pre_render' => [
        static::class . '::preRenderPager',
      ],
      '#theme' => 'pager',
      // The pager ID, to distinguish between multiple pagers on the same page.
'#element' => 0,
      // An associative array of query string parameters to append to the pager
      // links.
'#parameters' => [],
      // The number of pages in the list.
'#quantity' => 9,
      // An array of labels for the controls in the pager.
'#tags' => [],
      // The name of the route to be used to build pager links. By default no
      // path is provided, which will make links relative to the current URL.
      // This makes the page more effectively cacheable.
'#route_name' => '<none>',
    ];
  }
  
  /**
   * #pre_render callback to associate the appropriate cache context.
   *
   *
   * @param array $pager
   *   A renderable array of #type => pager.
   *
   * @return array
   */
  public static function preRenderPager(array $pager) {
    // Note: the default pager theme process function
    // template_preprocess_pager() also calls
    // \Drupal\Core\Pager\PagerManagerInterface::getUpdatedParameters(), which
    // maintains the existing query string. Therefore
    // template_preprocess_pager() adds the 'url.query_args' cache context,
    // which causes the more specific cache context below to be optimized away.
    // In other themes, however, that may not be the case.
    $pager['#cache']['contexts'][] = 'url.query_args.pagers:' . $pager['#element'];
    return $pager;
  }

}

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