I am new to drupal 8 and assisting my development team with design part. We are stuck in one place and not manage to move forward. We want to pass the node ID info to a webform filed which exist in another page. In the attached image I have explained what we want to achieve in Drupal 8 Environment, previously with PHP hack it was possible in drupal 7 but no idea how to achieve the same in drupal 8.
Assuming you want: The user will create a node. Upon submission a form will be displayed showing the node id pre-filled in a form. Make a module called example:
// example.module:
// we created a node type "product" (using UI). Saving this content
// will trigger the product form
/**
* Implements hook_ENTITY_TYPE_insert().
* @param \Drupal\node\NodeInterface
*/
function example_node_insert(NodeInterface $node) {
if ($node->bundle() == 'product') {
$nid = $node->id();
$response = new \Symfony\Component\HttpFoundation\RedirectResponse(\Drupal\Core\Url::
fromRoute('product.form', ['nid' => $nid])->toString());
$response->send(); // When OO we will return the response object instead
}
}
// example.routing.yml
product.form:
path: '/form/product/{nid}'
defaults:
_form: '\Drupal\example\Form\ProductForm'
_title: 'Product Form'
requirements:
_permission: 'access content'
// src/Form/ProductForm
<?php
namespace Drupal\example\Form;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\node\NodeInterface;
class ProductForm extends FormBase {
/**
* @var NodeInterface
*/
protected $node;
public function getFormId() {
return 'example_product_form';
}
public function buildForm(array $form, FormStateInterface $form_state, $nid = null) {
// if you need to load the node
// $this->node = NodeInterface::load($nid);
$form['node_id'] = [
'#type' => 'textfield',
'#title' => 'Node ID',
'#value' => $nid,
];
return $form;
}
public function submitForm(array &$form, FormStateInterface $form_state) {
// TODO: Implement submitForm() method.
// you can redirect back to the node
}
}
When dealing with this issue please realize the node id is not available until you save the node.
Webform 8.x-5.x allows elements to be populated using query string parameters but you must enable this feature.
Another approach would be to set the element's default value to a [current-page:query:?] token like [current-page:query:nid]
Trying using the [webform_submission:node:title] within the confirmation redirect URL's querystring parameter.
BTW, you must use an absolute URL. I just found this bug and created a issue on D.O. https://www.drupal.org/node/2864996
