public function TocBlockBase::build in TOC API 8

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

src/Plugin/Block/TocBlockBase.php, line 17

Class

TocBlockBase

Provides a base TOC block which displays the current TOC module's TOC in a block.

Namespace

Drupal\toc_api\Plugin\Block

Code

public function build() {
  $toc = $this
    ->getCurrentToc();

  // Build the TOC.
  $options = $toc
    ->getOptions();
  $build = [
    '#theme' => 'toc_' . $options['template'],
    '#toc' => $toc,
  ];

  // Set custom title.
  if ($title = $toc
    ->getTitle()) {
    $build['#title'] = $title;
  }
  return $build;
}