drupal - 设置表单暴露过滤器默认值

Question

Ajax 形式。带有 -Any- 的暴露过滤器.在 hook_form_alter()我写:

if ($form_id == 'views_exposed_form') {
    if ($form_state['view']->name == 'machinery') {
        $form['field_producer_tid']['#options']['All'] = t('-All-');
    }
    $form['field_producer_tid']['#default_value'] = "All";
    dsm($form);
}

但默认值为第二个 <option>从选择列表中。总是。我分配的任何值都将被忽略。我应该如何设置默认值？

Answer 1

此解决方案适用于 Drupal >= 8

function YOURMODULE_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if ($form['#id'] == 'views-exposed-form-my-view-display') {
    $request = \Drupal::request();
    if (is_null($request->get('EXPOSED_FILTER_FIELD_MACHINE_NAME'))) {
      $form_state->setUserInput(['EXPOSED_FILTER_FIELD_MACHINE_NAME' => 'DEFAULT_VALUE']);
    }
  }
}