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view core/modules/system/src/Plugin/Block/SystemMessagesBlock.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | af1871eacc83 |
children |
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<?php namespace Drupal\system\Plugin\Block; use Drupal\Core\Block\BlockBase; use Drupal\Core\Block\MessagesBlockPluginInterface; use Drupal\Core\Cache\Cache; /** * Provides a block to display the messages. * * @see @see \Drupal\Core\Messenger\MessengerInterface * * @Block( * id = "system_messages_block", * admin_label = @Translation("Messages") * ) */ class SystemMessagesBlock extends BlockBase implements MessagesBlockPluginInterface { /** * {@inheritdoc} */ public function defaultConfiguration() { return [ 'label_display' => FALSE, ]; } /** * {@inheritdoc} */ public function build() { return [ '#type' => 'status_messages', '#include_fallback' => TRUE, ]; } /** * {@inheritdoc} */ public function getCacheMaxAge() { // The messages are session-specific and hence aren't cacheable, but the // block itself *is* cacheable because it uses a #lazy_builder callback and // hence the block has a globally cacheable render array. return Cache::PERMANENT; } }