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<?php
namespace Drupal\path\Plugin\Field\FieldWidget;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\WidgetBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\Validator\ConstraintViolationInterface;
class PathWidget extends WidgetBase {
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
$entity = $items
->getEntity();
$element += [
'#element_validate' => [
[
static::class,
'validateFormElement',
],
],
];
$element['alias'] = [
'#type' => 'textfield',
'#title' => $element['#title'],
'#default_value' => $items[$delta]->alias,
'#required' => $element['#required'],
'#maxlength' => 255,
'#description' => $this
->t('Specify an alternative path by which this data can be accessed. For example, type "/about" when writing an about page.'),
];
$element['pid'] = [
'#type' => 'value',
'#value' => $items[$delta]->pid,
];
$element['source'] = [
'#type' => 'value',
'#value' => !$entity
->isNew() ? '/' . $entity
->toUrl()
->getInternalPath() : NULL,
];
$element['langcode'] = [
'#type' => 'value',
'#value' => $items[$delta]->langcode,
];
if (isset($form['advanced'])) {
$element += [
'#type' => 'details',
'#title' => t('URL path settings'),
'#open' => !empty($items[$delta]->alias),
'#group' => 'advanced',
'#access' => $entity
->get('path')
->access('edit'),
'#attributes' => [
'class' => [
'path-form',
],
],
'#attached' => [
'library' => [
'path/drupal.path',
],
],
];
$element['#weight'] = 30;
}
return $element;
}
public static function validateFormElement(array &$element, FormStateInterface $form_state) {
$alias = rtrim(trim($element['alias']['#value']), " \\/");
if ($alias !== '') {
$form_state
->setValueForElement($element['alias'], $alias);
$path_alias = \Drupal::entityTypeManager()
->getStorage('path_alias')
->create([
'path' => $element['source']['#value'],
'alias' => $alias,
'langcode' => $element['langcode']['#value'],
]);
$violations = $path_alias
->validate();
foreach ($violations as $violation) {
if (!$path_alias
->getPath() && $violation
->getPropertyPath() === 'path') {
continue;
}
$form_state
->setError($element['alias'], $violation
->getMessage());
}
}
}
public function errorElement(array $element, ConstraintViolationInterface $violation, array $form, FormStateInterface $form_state) {
return $element['alias'];
}
}