function BlockRepository::getVisibleBlocksPerRegion

File

core/modules/block/src/BlockRepository.php, line 55

Class

BlockRepository

Provides a repository for Block config entities.

Namespace

Code

public function getVisibleBlocksPerRegion(array &$cacheable_metadata = []) {
  $active_theme = $this->themeManager
    ->getActiveTheme();
  // Build an array of the region names in the right order.
  $empty = array_fill_keys($active_theme->getRegions(), []);
  $full = [];
  foreach ($this->blockStorage
    ->loadByProperties([
    'theme' => $active_theme->getName(),
  ]) as $block_id => $block) {
    /** @var \Drupal\block\BlockInterface $block */
    $access = $block->access('view', NULL, TRUE);
    $region = $block->getRegion();
    if (!isset($cacheable_metadata[$region])) {
      $cacheable_metadata[$region] = CacheableMetadata::createFromObject($access);
    }
    else {
      $cacheable_metadata[$region] = $cacheable_metadata[$region]->merge(CacheableMetadata::createFromObject($access));
    }
    // Set the contexts on the block before checking access.
    if ($access->isAllowed()) {
      $full[$region][$block_id] = $block;
    }
  }
  // Merge it with the actual values to maintain the region ordering.
  $assignments = array_intersect_key(array_merge($empty, $full), $empty);
  foreach ($assignments as &$assignment) {
    // Suppress errors because PHPUnit will indirectly modify the contents,
    // triggering https://bugs.php.net/bug.php?id=50688.
    @uasort($assignment, 'Drupal\\block\\Entity\\Block::sort');
  }
  return $assignments;
}