public function AggregatorFeedBlock::build in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/aggregator/src/Plugin/Block/AggregatorFeedBlock.php \Drupal\aggregator\Plugin\Block\AggregatorFeedBlock::build()

Builds and returns the renderable array for this block plugin.

If a block should not be rendered because it has no content, then this method must also ensure to return no content: it must then only return an empty array, or an empty array with #cache set (with cacheability metadata indicating the circumstances for it being empty).

Return value

array A renderable array representing the content of the block.

Overrides BlockPluginInterface::build

See also

\Drupal\block\BlockViewBuilder

File

core/modules/aggregator/src/Plugin/Block/AggregatorFeedBlock.php, line 128

Class

AggregatorFeedBlock

Provides an 'Aggregator feed' block with the latest items from the feed.

Namespace

Drupal\aggregator\Plugin\Block

Code

public function build() {

  // Load the selected feed.
  if ($feed = $this->feedStorage
    ->load($this->configuration['feed'])) {
    $result = $this->itemStorage
      ->getQuery()
      ->condition('fid', $feed
      ->id())
      ->range(0, $this->configuration['block_count'])
      ->sort('timestamp', 'DESC')
      ->sort('iid', 'DESC')
      ->execute();
    if ($result) {

      // Only display the block if there are items to show.
      $items = $this->itemStorage
        ->loadMultiple($result);
      $build['list'] = [
        '#theme' => 'item_list',
        '#items' => [],
      ];
      foreach ($items as $item) {
        $build['list']['#items'][$item
          ->id()] = [
          '#type' => 'link',
          '#url' => $item
            ->toUrl(),
          '#title' => $item
            ->label(),
        ];
      }
      $build['more_link'] = [
        '#type' => 'more_link',
        '#url' => $feed
          ->toUrl(),
        '#attributes' => [
          'title' => $this
            ->t("View this feed's recent news."),
        ],
      ];
      return $build;
    }
  }
}