* Changes an exposed "type" filter from a multi-select to checkboxes.
*/
function views_test_checkboxes_theme_form_views_exposed_form_alter(&$form, FormStateInterface $form_state) {
- $form['type']['#type'] = 'checkboxes';
+ if (isset($form['type'])) {
+ $form['type']['#type'] = 'checkboxes';
+ }
+ if (isset($form['tid'])) {
+ $form['tid']['#type'] = 'checkboxes';
+ }
}