I have a node of a particular type that I would like to save as a pdf file (using Entity_print) upon creation or update (whenever a content is saved). The issue I am running into is that some of the variable data used in the template is determined in the preprocessor but the preprocessor has not yet been run at the time. I have a PDF view mode and corresponding templates. When I enter something similar to http://example.com/print/pdf/[entity_type]/[entity_id] I get exactly what I want but that's just at run time. I need this setup 'behind the scenes' and saved into the files. I can generate the pdf file but it is missing the preprocessed variable data. Is the only way to get variable data into twig via preprocessor? Is there a hook that will do this? I have played with a few of them but none seem to be able to capture the variables for the twig templates. By the way I do not want to override the regular preprocessor theme which will be used for page rendering.

1 Answer 1


I had exactly the same problem. I tried the following simple solution but as it's an intranet with content not available to anonymous users it doesn't work:

$url = "https://{$_SERVER['HTTP_HOST']}/print/pdf/node/" . $node->id();
$pdf_data = file_get_contents($url);
$file = file_save_data($pdf_data, 'private://' . $filename) ;

So I came up with this function, which will return a File object:

function mymodule_entity_print_saver($nid, $filename, $scheme = 'private') {
  $pb = new Drupal\entity_print\PrintBuilder(
  $node = Drupal\node\Entity\Node::load($nid);
  $path = $pb->savePrintable(
  $file = File::create([
      'uri' => $path,
      'uid' => \Drupal::currentUser()->id(),
      'status' => FILE_STATUS_PERMANENT,
  return $file;

You could play around with the exists/replace constant as well if needs be.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.