public function ParagraphBlocksPanelsController::selectBlock in Paragraph blocks 8

Same name and namespace in other branches

1. 8.2 src/Controller/ParagraphBlocksPanelsController.php \Drupal\paragraph_blocks\Controller\ParagraphBlocksPanelsController::selectBlock()
2. 3.x src/Controller/ParagraphBlocksPanelsController.php \Drupal\paragraph_blocks\Controller\ParagraphBlocksPanelsController::selectBlock()

This is called from panels.select_block, while selecting a block to put into the default page layout. Filter out blocks here that are also filtered in the panels IPE.

@todo: Should this be a panels IPE patch?

@todo: Is there a way to let blockManager contexts filter this so that we don't need to override the controller class?

File

src/Controller/ParagraphBlocksPanelsController.php, line 26

Class

ParagraphBlocksPanelsController

Overrides the Panels controller class.

Namespace

Drupal\paragraph_blocks\Controller

Code

public function selectBlock(Request $request, $machine_name, $tempstore_id) {
  $build = parent::selectBlock($request, $machine_name, $tempstore_id);

  // Create blocks from build array.
  $available_plugins = $this->blockManager
    ->getDefinitions();
  $blocks = [];
  foreach ($build as $category => $item) {
    foreach (array_keys($item['content']['#links']) as $plugin_id) {
      $plugin_definition = $available_plugins[$plugin_id];
      $blocks[] = [
        'plugin_id' => $plugin_id,
        'category' => $plugin_definition['category'],
        'id' => $plugin_definition['id'],
        'provider' => $plugin_definition['provider'],
        'label' => $plugin_definition['admin_label'],
      ];
    }
  }

  // Trigger hook_panels_ipe_blocks_alter(). Allows other modules to change
  // the list of blocks that are visible.
  $original_blocks = $blocks;
  \Drupal::moduleHandler()
    ->alter('panels_ipe_blocks', $blocks);

  // Key the blocks array for speed.
  $keyed_blocks = [];
  foreach ($blocks as $block) {
    $plugin_id = $block['plugin_id'];
    $keyed_blocks[$plugin_id] = $block;
  }

  // Update the build array from the altered blocks.
  foreach (Element::children($build) as $category) {
    $item =& $build[$category];
    foreach (array_keys($item['content']['#links']) as $plugin_id) {
      if (isset($keyed_blocks[$plugin_id])) {
        $item['content']['#links'][$plugin_id]['title'] = $keyed_blocks[$plugin_id]['label'];
      }
      else {
        unset($item['content']['#links'][$plugin_id]);
      }
    }
    if (empty($item['content']['#links'])) {
      unset($build[$category]);
    }
  }
  return $build;
}