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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\system\Plugin\Block\SystemMessagesBlock. | |
| */ | |
| 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 drupal_set_message() | |
| * | |
| * @Block( | |
| * id = "system_messages_block", | |
| * admin_label = @Translation("Messages") | |
| * ) | |
| */ | |
| class SystemMessagesBlock extends BlockBase implements MessagesBlockPluginInterface { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function defaultConfiguration() { | |
| return array( | |
| 'label_display' => FALSE, | |
| ); | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function build() { | |
| return ['#type' => 'status_messages']; | |
| } | |
| /** | |
| * {@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; | |
| } | |
| } |