I've been given a requirement to allow for a webform to be inserted into another webform's confirmation page.
At first I tried this with a token I could insert into the confirmation message, the form appears fine, but of course, the new webform is inside of the "parent" webform, which strips out the form tag.
So now I have overriden a few of the webform and webform submission entities handlers, so I can write my own custom getCustomForm function, I can get the new form appearing, but the submit behaviours are weird.
I've tried many things including:
return Webform::load( $webform->getThirdPartySetting('my_module', 'webform') )->getSubmissionForm();
$form['confirmation'] = [ '#type' => 'webform', '#webform' => $webform->getThirdPartySetting('wwf_fields', 'webform'), '#source_entity' => $webform, '#message' => [ '#type' => 'inline_template', '#template' => $webform->getSetting('confirmation_message') ] ];
Is there some combination of code I'm missing, or am I trying to bend the system a little too much?