I am trying to display my webform in a modal (including error/validation messages inside the modal). I am following this approach for a custom drupal form which is not a webform. I am wondering whether this is possible at all with webforms and in case it is, what I need to take into account to make it run?
The first problem I am having is the following code line from the example's
$modal_form = $this->formBuilder->getForm('Drupal\tl_session\Form\TeacherForm');
When I try to use this in my own controller, I cannot get the webform's proper namespace + id. When I check my webform with devel it says:
[__CLASS__] => Drupal\webform\Entity\Webform [id] => add_news_webform
But I get a "The form argument Drupal\webform\Entity\Webform\webform-submission-add_news_webform-form is not a valid form" error. I tried many things, but did not succeed.
How can I get the webform with formBuilder and what else am I missing here (like webform specific ajax settings etc.)?