Passing HTML to the response object

Question

I had this piece of code in a module developed for some previous version of Drupal 8.

protected function getOutput() {
    $content = $this->buildContent();
    //print_r($content);
    $page = array(
      '#theme' => 'html',
      '#page_object' => new Html(render($content)),
    );
    $rendered_page = render($page);
    return $rendered_page;
}

Now, in the present beta release, it shows this error:

Fatal error: Class 'Drupal\hardcopy\Plugin\Html' not found in C:\xampp\htdocs\drupalbeta7\modules\custom\hardcopy\src\Plugin\HardcopyFormatBase.php on line 175

Can someone tell me how to pass the HTML of the whole page in the response object?

Answer 1

As D8 uses Symfony responses it's as simple as:

use Symfony\Component\HttpFoundation\Response;

...

$response = new Response(
  'Your HTML content here',
  Response::HTTP_OK,
  array('content-type' => 'text/html')
);

return $response;

See the docs for more information.