I have a render array and I want to convert it to HTML and place it in a WYSIWYG field. What is the generally accepted way to do that since drupal_render() is deprecated?
2 Answers
It was replaced with the renderer service.
$render_service = \Drupal::service('renderer');
As mpdonadio and 4k4 have pointed out in the comments, to prevent metadata from bubbling up to the main request, you should execute this in a new render context. You can do so by using the renderPlain method, rather than the usual render method (unless you're returning this from a controller, in which case use renderRoot instead).
$rendered = $render_service->renderPlain($build);
-
1Shouldn't that be done in a new render context to prevent any metadata from bubbling to the main one for the page?– mpdonadio ♦Commented Mar 5, 2019 at 20:05
-
@mpdonadio I'm sure you're right, but I haven't found it necessary the one or two times I've used this. Probably a result of where/when I'm calling it– Clive ♦Commented Mar 5, 2019 at 20:07
-
1Yes, in this case you should use a new render context, with
\Drupal::service('renderer')->renderPlain($renderArray)or->renderRoot()if this delivers the result from a controller.– 4uk4Commented Mar 5, 2019 at 20:12 -
@4k4 Thanks for the info, that's very useful to know. I incorporated it into the answer– Clive ♦Commented Mar 5, 2019 at 20:16
-
@rjacobsen0 You're very welcome, but please see the edit as it has some potentially important information :)– Clive ♦Commented Mar 5, 2019 at 20:17
This documentation is the best place to have the most accurate/up-to-date documentation about the rendering pipeline and its methods - such as drupal_render() - in Drupal 8+.
