class PathElement in Drupal 8

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.

Plugin annotation

@FormElement("path");

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\Render\Element\RenderElement implements ElementInterface
      • class \Drupal\Core\Render\Element\FormElement implements FormElementInterface
        • class \Drupal\Core\Render\Element\Textfield
          • class \Drupal\Core\Render\Element\PathElement

2 files declare their use of PathElement

ContactFormEditForm.php in core/modules/contact/src/ContactFormEditForm.php

PathElementFormTest.php in core/tests/Drupal/KernelTests/Core/Element/PathElementFormTest.php

2 #type uses of PathElement

ContactFormEditForm::form in core/modules/contact/src/ContactFormEditForm.php

Gets the actual form array to be built.

PathElementFormTest::buildForm in core/tests/Drupal/KernelTests/Core/Element/PathElementFormTest.php

Form constructor.

File

core/lib/Drupal/Core/Render/Element/PathElement.php, line 16

Namespace

Drupal\Core\Render\Element

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'],
      ]));
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
FormElement::processAutocomplete	public static	function	Adds autocomplete functionality to elements.
FormElement::processPattern	public static	function	#process callback for #pattern form element property.
FormElement::validatePattern	public static	function	#element_validate callback for #pattern form element property.
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PathElement::CONVERT_NONE		constant	Do not convert the submitted value from the user-supplied path.
PathElement::CONVERT_ROUTE		constant	Convert the submitted value into a route name and parameter pair.
PathElement::CONVERT_URL		constant	Convert the submitted value into a \Drupal\Core\Url value object.
PathElement::getInfo	public	function	Returns the element properties for this element. Overrides Textfield::getInfo
PathElement::validateMatchedPath	public static	function	Form element validation handler for matched_path elements.
PathElement::valueCallback	public static	function	Determines how user input is mapped to an element's #value property. Overrides Textfield::valueCallback
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	92
RenderElement::preRenderAjaxForm	public static	function	Adds Ajax information about an element to communicate with JavaScript.
RenderElement::preRenderGroup	public static	function	Adds members of this group as actual elements for rendering.
RenderElement::processAjaxForm	public static	function	Form element processing handler for the #ajax form property.	1
RenderElement::processGroup	public static	function	Arranges elements into groups.
RenderElement::setAttributes	public static	function	Sets a form element's class attribute. Overrides ElementInterface::setAttributes
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
Textfield::preRenderTextfield	public static	function	Prepares a #type 'textfield' render element for input.html.twig.