--- /dev/null
+/**
+ * Implements hook_block_access().
+ */
+function {{ machine_name }}_block_access(\Drupal\block\Entity\Block $block, $operation, \Drupal\Core\Session\AccountInterface $account) {
+ // Example code that would prevent displaying the 'Powered by Drupal' block in
+ // a region different than the footer.
+ if ($operation == 'view' && $block->getPluginId() == 'system_powered_by_block') {
+ return AccessResult::forbiddenIf($block->getRegion() != 'footer')->addCacheableDependency($block);
+ }
+
+ // No opinion.
+ return AccessResult::neutral();
+}