class ViewsExposedForm in Drupal 9

Provides the views exposed form.

@internal

Hierarchy

• class \Drupal\Core\Form\FormBase implements ContainerInjectionInterface, FormInterface uses DependencySerializationTrait, LoggerChannelTrait, MessengerTrait, RedirectDestinationTrait, StringTranslationTrait
  • class \Drupal\views\Form\ViewsExposedForm

1 file declares its use of ViewsExposedForm

FormOperations.php in core/modules/workspaces/src/FormOperations.php

File

core/modules/views/src/Form/ViewsExposedForm.php, line 19

Namespace

Drupal\views\Form

class ViewsExposedForm extends FormBase {

  /**
   * The exposed form cache.
   *
   * @var \Drupal\views\ExposedFormCache
   */
  protected $exposedFormCache;

  /**
   * The current path stack.
   *
   * @var \Drupal\Core\Path\CurrentPathStack
   */
  protected $currentPathStack;

  /**
   * Constructs a new ViewsExposedForm.
   *
   * @param \Drupal\views\ExposedFormCache $exposed_form_cache
   *   The exposed form cache.
   * @param \Drupal\Core\Path\CurrentPathStack $current_path_stack
   *   The current path stack.
   */
  public function __construct(ExposedFormCache $exposed_form_cache, CurrentPathStack $current_path_stack) {
    $this->exposedFormCache = $exposed_form_cache;
    $this->currentPathStack = $current_path_stack;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('views.exposed_form_cache'), $container
      ->get('path.current'));
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'views_exposed_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {

    // Don't show the form when batch operations are in progress.
    if ($batch = batch_get() && isset($batch['current_set'])) {
      return [
        // Set the theme callback to be nothing to avoid errors in template_preprocess_views_exposed_form().
        '#theme' => '',
      ];
    }

    // Make sure that we validate because this form might be submitted
    // multiple times per page.
    $form_state
      ->setValidationEnforced();

    /** @var \Drupal\views\ViewExecutable $view */
    $view = $form_state
      ->get('view');
    $display =& $form_state
      ->get('display');
    $form_state
      ->setUserInput($view
      ->getExposedInput());

    // Let form plugins know this is for exposed widgets.
    $form_state
      ->set('exposed', TRUE);

    // Check if the form was already created
    if ($cache = $this->exposedFormCache
      ->getForm($view->storage
      ->id(), $view->current_display)) {
      return $cache;
    }
    $form['#info'] = [];

    // Go through each handler and let it generate its exposed widget.
    foreach ($view->display_handler->handlers as $type => $value) {

      /** @var \Drupal\views\Plugin\views\ViewsHandlerInterface $handler */
      foreach ($view->{$type} as $id => $handler) {
        if ($handler
          ->canExpose() && $handler
          ->isExposed()) {

          // Grouped exposed filters have their own forms.
          // Instead of render the standard exposed form, a new Select or
          // Radio form field is rendered with the available groups.
          // When a user chooses an option the selected value is split
          // into the operator and value that the item represents.
          if ($handler
            ->isAGroup()) {
            $handler
              ->groupForm($form, $form_state);
            $id = $handler->options['group_info']['identifier'];
          }
          else {
            $handler
              ->buildExposedForm($form, $form_state);
          }
          if ($info = $handler
            ->exposedInfo()) {
            $form['#info']["{$type}-{$id}"] = $info;
          }
        }
      }
    }
    $form['actions'] = [
      '#type' => 'actions',
    ];
    $form['actions']['submit'] = [
      // Prevent from showing up in \Drupal::request()->query.
      '#name' => '',
      '#type' => 'submit',
      '#value' => $this
        ->t('Apply'),
      '#id' => Html::getUniqueId('edit-submit-' . $view->storage
        ->id()),
    ];
    if (!$view
      ->hasUrl()) {

      // On any non views.ajax route, use the current route for the form action.
      if ($this
        ->getRouteMatch()
        ->getRouteName() !== 'views.ajax') {
        $form_action = Url::fromRoute('<current>')
          ->toString();
      }
      else {

        // On the views.ajax route, set the action to the page we were on.
        $form_action = Url::fromUserInput($this->currentPathStack
          ->getPath())
          ->toString();
      }
    }
    else {
      $form_action = $view
        ->getUrl()
        ->toString();
    }
    $form['#action'] = $form_action;
    $form['#theme'] = $view
      ->buildThemeFunctions('views_exposed_form');
    $form['#id'] = Html::cleanCssIdentifier('views_exposed_form-' . $view->storage
      ->id() . '-' . $display['id']);

    /** @var \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginInterface $exposed_form_plugin */
    $exposed_form_plugin = $view->display_handler
      ->getPlugin('exposed_form');
    $exposed_form_plugin
      ->exposedFormAlter($form, $form_state);

    // Save the form.
    $this->exposedFormCache
      ->setForm($view->storage
      ->id(), $view->current_display, $form);
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $view = $form_state
      ->get('view');
    foreach ([
      'field',
      'filter',
    ] as $type) {

      /** @var \Drupal\views\Plugin\views\ViewsHandlerInterface[] $handlers */
      $handlers =& $view->{$type};
      foreach ($handlers as $key => $handler) {
        $handlers[$key]
          ->validateExposed($form, $form_state);
      }
    }

    /** @var \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginInterface $exposed_form_plugin */
    $exposed_form_plugin = $view->display_handler
      ->getPlugin('exposed_form');
    $exposed_form_plugin
      ->exposedFormValidate($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    // Form input keys that will not be included in $view->exposed_raw_data.
    $exclude = [
      'submit',
      'form_build_id',
      'form_id',
      'form_token',
      'exposed_form_plugin',
      'reset',
    ];
    $values = $form_state
      ->getValues();
    foreach ([
      'field',
      'filter',
    ] as $type) {

      /** @var \Drupal\views\Plugin\views\ViewsHandlerInterface[] $handlers */
      $handlers =& $form_state
        ->get('view')->{$type};
      foreach ($handlers as $key => $info) {
        if ($handlers[$key]
          ->acceptExposedInput($values)) {
          $handlers[$key]
            ->submitExposed($form, $form_state);
        }
        else {

          // The input from the form did not validate, exclude it from the
          // stored raw data.
          $exclude[] = $key;
        }
      }
    }
    $view = $form_state
      ->get('view');
    $view->exposed_data = $values;
    $view->exposed_raw_input = [];
    $exclude = [
      'submit',
      'form_build_id',
      'form_id',
      'form_token',
      'exposed_form_plugin',
      'reset',
    ];

    /** @var \Drupal\views\Plugin\views\exposed_form\ExposedFormPluginBase $exposed_form_plugin */
    $exposed_form_plugin = $view->display_handler
      ->getPlugin('exposed_form');
    $exposed_form_plugin
      ->exposedFormSubmit($form, $form_state, $exclude);
    foreach ($values as $key => $value) {
      if (!empty($key) && !in_array($key, $exclude)) {
        if (is_array($value)) {

          // Handle checkboxes, we only want to include the checked options.
          // @todo revisit the need for this when
          //   https://www.drupal.org/node/342316 is resolved.
          $checked = Checkboxes::getCheckedCheckboxes($value);
          foreach ($checked as $option_id) {
            $view->exposed_raw_input[$key][$option_id] = $value[$option_id];
          }
        }
        else {
          $view->exposed_raw_input[$key] = $value;
        }
      }
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
FormBase::$configFactory	protected	property	The config factory.	3
FormBase::$requestStack	protected	property	The request stack.	1
FormBase::$routeMatch	protected	property	The route match.
FormBase::config	protected	function	Retrieves a configuration object.
FormBase::configFactory	protected	function	Gets the config factory for this form.	3
FormBase::container	private	function	Returns the service container.
FormBase::currentUser	protected	function	Gets the current user.
FormBase::getRequest	protected	function	Gets the request object.
FormBase::getRouteMatch	protected	function	Gets the route match.
FormBase::logger	protected	function	Gets the logger for a specific channel.
FormBase::redirect	protected	function	Returns a redirect response object for the specified route.
FormBase::resetConfigFactory	public	function	Resets the configuration factory.
FormBase::setConfigFactory	public	function	Sets the config factory for this form.
FormBase::setRequestStack	public	function	Sets the request stack object to use.
LoggerChannelTrait::$loggerFactory	protected	property	The logger channel factory service.
LoggerChannelTrait::getLogger	protected	function	Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory	public	function	Injects the logger channel factory.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.	1
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.
ViewsExposedForm::$currentPathStack	protected	property	The current path stack.
ViewsExposedForm::$exposedFormCache	protected	property	The exposed form cache.
ViewsExposedForm::buildForm	public	function	Form constructor. Overrides FormInterface::buildForm
ViewsExposedForm::create	public static	function	Instantiates a new instance of this class. Overrides FormBase::create
ViewsExposedForm::getFormId	public	function	Returns a unique string identifying the form. Overrides FormInterface::getFormId
ViewsExposedForm::submitForm	public	function	Form submission handler. Overrides FormInterface::submitForm
ViewsExposedForm::validateForm	public	function	Form validation handler. Overrides FormBase::validateForm
ViewsExposedForm::__construct	public	function	Constructs a new ViewsExposedForm.