function ExposedFormPluginBase::exposedFormAlter

File

core/modules/views/src/Plugin/views/exposed_form/ExposedFormPluginBase.php, line 199

Class

ExposedFormPluginBase

Base class for Views exposed filter form plugins.

Namespace

Code

public function exposedFormAlter(&$form, FormStateInterface $form_state) {
  if (!empty($this->options['submit_button'])) {
    $form['actions']['submit']['#value'] = $this->options['submit_button'];
  }
  // Check if there is exposed sorts for this view
  $exposed_sorts = [];
  $exposed_sorts_options = [];
  foreach ($this->view->sort as $id => $handler) {
    if ($handler->canExpose() && $handler->isExposed() && !empty($handler->options['expose']['field_identifier'])) {
      $exposed_sorts[$handler->options['expose']['field_identifier']] = $id;
      $exposed_sorts_options[$handler->options['expose']['field_identifier']] = $handler->options['expose']['label'];
    }
  }
  if (count($exposed_sorts)) {
    $form['sort_by'] = [
      '#type' => 'select',
      '#options' => $exposed_sorts_options,
      '#title' => $this->options['exposed_sorts_label'],
    ];
    $sort_order = [
      'ASC' => $this->options['sort_asc_label'],
      'DESC' => $this->options['sort_desc_label'],
    ];
    $user_input = $form_state->getUserInput();
    if (isset($user_input['sort_by']) && isset($exposed_sorts[$user_input['sort_by']]) && isset($this->view->sort[$exposed_sorts[$user_input['sort_by']]])) {
      $default_sort_order = $this->view->sort[$exposed_sorts[$user_input['sort_by']]]->options['order'];
    }
    else {
      $first_sort = reset($this->view->sort);
      $default_sort_order = $first_sort->options['order'];
    }
    if (!isset($user_input['sort_by'])) {
      $keys = array_keys($exposed_sorts);
      $user_input['sort_by'] = array_shift($keys);
      $form_state->setUserInput($user_input);
    }
    if ($this->options['expose_sort_order']) {
      $form['sort_order'] = [
        '#type' => 'select',
        '#options' => $sort_order,
        '#title' => $this->t('Order', [], [
          'context' => 'Sort order',
        ]),
        '#default_value' => $default_sort_order,
      ];
    }
  }
  if (!empty($this->options['reset_button'])) {
    $form['actions']['reset'] = [
      '#value' => $this->options['reset_button_label'],
      '#type' => 'submit',
      '#weight' => 10,
    ];
    // Get an array of exposed filters, keyed by identifier option.
    $exposed_filters = [];
    foreach ($this->view->filter as $id => $handler) {
      if ($handler->canExpose() && $handler->isExposed() && !empty($handler->options['expose']['identifier'])) {
        $exposed_filters[$handler->options['expose']['identifier']] = $id;
      }
    }
    $all_exposed = array_merge($exposed_sorts, $exposed_filters);
    // Set the access to FALSE if there is no exposed input.
    if (!array_intersect_key($all_exposed, $this->view
      ->getExposedInput())) {
      $form['actions']['reset']['#access'] = FALSE;
    }
  }
  $pager = $this->view->display_handler
    ->getPlugin('pager');
  if ($pager) {
    $pager->exposedFormAlter($form, $form_state);
    $form_state->set('pager_plugin', $pager);
  }
}