history_node_view_alter(array &$build, EntityInterface $node, EntityViewDisplayInterface $display)
Implements hook_ENTITY_TYPE_view_alter() for node entities.
function history_node_view_alter(array &$build, EntityInterface $node, EntityViewDisplayInterface $display) { // Update the history table, stating that this user viewed this node. if ($display->getOriginalMode() === 'full') { $build['#cache']['contexts'][] = 'user.roles:authenticated'; if (\Drupal::currentUser()->isAuthenticated()) { // When the window's "load" event is triggered, mark the node as read. // This still allows for Drupal behaviors (which are triggered on the // "DOMContentReady" event) to add "new" and "updated" indicators. $build['#attached']['library'][] = 'history/mark-as-read'; $build['#attached']['drupalSettings']['history']['nodesToMarkAsRead'][$node->id()] = TRUE; } } }
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https://api.drupal.org/api/drupal/core!modules!history!history.module/function/history_node_view_alter/8.1.x