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- <?php
- namespace Drupal\Core\Render\Element;
- use Drupal\Core\Form\FormStateInterface;
- /**
- * Provides a matched path render element.
- *
- * Provides a form element to enter a path which can be optionally validated and
- * stored as either a \Drupal\Core\Url value object or a array containing a
- * route name and route parameters pair.
- *
- * @FormElement("path")
- */
- class PathElement extends Textfield {
- /**
- * Do not convert the submitted value from the user-supplied path.
- */
- const CONVERT_NONE = 0;
- /**
- * Convert the submitted value into a route name and parameter pair.
- */
- const CONVERT_ROUTE = 1;
- /**
- * Convert the submitted value into a \Drupal\Core\Url value object.
- */
- const CONVERT_URL = 2;
- /**
- * {@inheritdoc}
- */
- public function getInfo() {
- $info = parent::getInfo();
- $class = get_class($this);
- $info['#validate_path'] = TRUE;
- $info['#convert_path'] = self::CONVERT_ROUTE;
- $info['#element_validate'] = [
- [$class, 'validateMatchedPath'],
- ];
- return $info;
- }
- /**
- * {@inheritdoc}
- */
- public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
- return NULL;
- }
- /**
- * Form element validation handler for matched_path elements.
- *
- * Note that #maxlength is validated by _form_validate() already.
- *
- * This checks that the submitted value matches an active route.
- */
- public static function validateMatchedPath(&$element, FormStateInterface $form_state, &$complete_form) {
- if (!empty($element['#value']) && ($element['#validate_path'] || $element['#convert_path'] != self::CONVERT_NONE)) {
- /** @var \Drupal\Core\Url $url */
- if ($url = \Drupal::service('path.validator')->getUrlIfValid($element['#value'])) {
- if ($url->isExternal()) {
- $form_state->setError($element, t('You cannot use an external URL, please enter a relative path.'));
- return;
- }
- if ($element['#convert_path'] == self::CONVERT_NONE) {
- // Url is valid, no conversion required.
- return;
- }
- // We do the value conversion here whilst the Url object is in scope
- // after validation has occurred.
- if ($element['#convert_path'] == self::CONVERT_ROUTE) {
- $form_state->setValueForElement($element, [
- 'route_name' => $url->getRouteName(),
- 'route_parameters' => $url->getRouteParameters(),
- ]);
- return;
- }
- elseif ($element['#convert_path'] == self::CONVERT_URL) {
- $form_state->setValueForElement($element, $url);
- return;
- }
- }
- $form_state->setError($element, t('This path does not exist or you do not have permission to link to %path.', [
- '%path' => $element['#value'],
- ]));
- }
- }
- }
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