I've spend an hour to understand how to render user login form and user register form in Drupal 8 to print them in a custom place.
Here is the solution.
Lets say you want to print those two forms in a custom place on your page (in a popup in my case).
So if you want to print it in the page.html.twig - so in the THEMENAME.theme write this first:
function THEMENAME_preprocess_page(&$variables) { }
User login form
$form = Drupal::formBuilder()->getForm(Drupal\user\Form\UserLoginForm::class) ; $render = Drupal::service('renderer'); $variables['login_form'] = $render->renderPlain($form);
User registration form
$entity = \Drupal::entityTypeManager()->getStorage('user')->create(array()); $formObject = \Drupal::entityTypeManager() ->getFormObject('user', 'register') ->setEntity($entity); $form = \Drupal::formBuilder()->getForm($formObject); $variables['register_form'] = \Drupal::service('renderer')->render($form);
The final step would be to output the results using your twig template.
For example in page.html.twig you just write to ouput the login form:
{{ login_form }}
Or register form:
{{ register_form }}
×
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Thanks, works good on pages. If I try to use it on nodes it produces an error. Do I have to change anything if I have THEMENAME_preprocess_node ?
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The full code is in the article ;)
So you need to add inside you THEMENAME.theme:
Then inside your page.html.twig:
Just add {{ login_form }} to print login form wherever you want.
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working in page.html.tpl but not work if i use for example menu.html.tpl :(
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