SettingsForm.php in Menu Link Weight 8
File
src/Form/SettingsForm.php
View source
<?php
namespace Drupal\menu_link_weight\Form;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
class SettingsForm extends ConfigFormBase {
public function getFormId() {
return 'menu_link_weight_settings';
}
protected function getEditableConfigNames() {
return [
'menu_link_weight.settings',
];
}
public function buildForm(array $form, FormStateInterface $form_state) {
$config = $this
->config('menu_link_weight.settings');
$form['menu_parent_form_selector'] = array(
'#type' => 'select',
'#title' => t('Parent menu link selector'),
'#default_value' => $config
->get('menu_parent_form_selector') ? $config
->get('menu_parent_form_selector') : 'default',
'#options' => [
'cshs' => $this
->t('Client-side hierarchical select'),
],
'#required' => TRUE,
'#empty_option' => $this
->t('Default'),
'#empty_value' => 'default',
);
return parent::buildForm($form, $form_state);
}
public function validateForm(array &$form, FormStateInterface $form_state) {
if ($form_state
->getValue('menu_parent_form_selector') === 'cshs' && !\Drupal::moduleHandler()
->moduleExists('cshs')) {
$form_state
->setErrorByName('menu_parent_form_selector', t('You have to install <a href="https://www.drupal.org/project/cshs">Client-side hierarchical select</a> before you can use this option.'));
}
}
public function submitForm(array &$form, FormStateInterface $form_state) {
$this
->config('menu_link_weight.settings')
->set('menu_parent_form_selector', $form_state
->getValue('menu_parent_form_selector'))
->save();
parent::submitForm($form, $form_state);
}
}