function HandlerBase::showExposeForm

Shortcut to display the exposed options form.

Overrides ViewsHandlerInterface::showExposeForm

File

core/modules/views/src/Plugin/views/HandlerBase.php, line 451

Class

HandlerBase

Base class for Views handler plugins.

Namespace

Code

public function showExposeForm(&$form, FormStateInterface $form_state) {
  if (empty($this->options['exposed'])) {
    return;
  }
  $this->buildExposeForm($form, $form_state);
  // When we click the expose button, we add new gadgets to the form but they
  // have no data in POST so their defaults get wiped out. This prevents
  // these defaults from getting wiped out. This setting will only be TRUE
  // during a 2nd pass rerender.
  if ($form_state->get('force_expose_options')) {
    foreach (Element::children($form['expose']) as $id) {
      if (isset($form['expose'][$id]['#default_value']) && !isset($form['expose'][$id]['#value'])) {
        $form['expose'][$id]['#value'] = $form['expose'][$id]['#default_value'];
      }
    }
  }
}