function HandlerBase::showExposeForm

Shortcut to display the exposed options form.

Overrides ViewsHandlerInterface::showExposeForm

File

core/modules/views/src/Plugin/views/HandlerBase.php, line 457

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'];
            }
        }
    }
}