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function scheduler_node_view in Scheduler 8

Same name and namespace in other branches
  1. 7 scheduler.module \scheduler_node_view()

Implements hook_ENTITY_TYPE_view() for node entities.

File

./scheduler.module, line 404
Scheduler publishes and unpublishes nodes on dates specified by the user.

Code

function scheduler_node_view(array &$build, EntityInterface $node, EntityViewDisplayInterface $display, $view_mode) {

  // If the node is going to be unpublished, then add this information to the
  // header for search engines. Only do this when the current page is the
  // full-page view of the node.
  // @see https://googleblog.blogspot.be/2007/07/robots-exclusion-protocol-now-with-even.html
  if (!empty($node->unpublish_on->value) && node_is_page($node)) {
    $unavailable_after = date(DATE_RFC850, $node->unpublish_on->value);
    $build['#attached']['http_header'][] = [
      'X-Robots-Tag',
      'unavailable_after: ' . $unavailable_after,
    ];
  }
}