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

File

core/modules/block/tests/modules/block_test/src/Plugin/Block/TestCacheBlock.php, line 20

Class

TestCacheBlock

Provides a block to test caching.

Namespace

Drupal\block_test\Plugin\Block

Code

public function build() {
  $content = \Drupal::state()->get('block_test.content');
  $build = [];
  if (!empty($content)) {
    $build['#markup'] = $content;
  }
  return $build;
}

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