config('book.settings'); $form['book_allowed_types'] = [ '#type' => 'checkboxes', '#title' => $this->t('Content types allowed in book outlines'), '#default_value' => $config->get('allowed_types'), '#options' => $types, '#description' => $this->t('Users with the %outline-perm permission can add all content types.', ['%outline-perm' => $this->t('Administer book outlines')]), '#required' => TRUE, ]; $form['book_child_type'] = [ '#type' => 'radios', '#title' => $this->t('Content type for the Add child page link'), '#default_value' => $config->get('child_type'), '#options' => $types, '#required' => TRUE, ]; $form['array_filter'] = ['#type' => 'value', '#value' => TRUE]; return parent::buildForm($form, $form_state); } /** * {@inheritdoc} */ public function validateForm(array &$form, FormStateInterface $form_state) { $child_type = $form_state->getValue('book_child_type'); if ($form_state->isValueEmpty(['book_allowed_types', $child_type])) { $form_state->setErrorByName('book_child_type', $this->t('The content type for the %add-child link must be one of those selected as an allowed book outline type.', ['%add-child' => $this->t('Add child page')])); } parent::validateForm($form, $form_state); } /** * {@inheritdoc} */ public function submitForm(array &$form, FormStateInterface $form_state) { $allowed_types = array_filter($form_state->getValue('book_allowed_types')); // We need to save the allowed types in an array ordered by machine_name so // that we can save them in the correct order if node type changes. // @see book_node_type_update(). sort($allowed_types); $this->config('book.settings') // Remove unchecked types. ->set('allowed_types', $allowed_types) ->set('child_type', $form_state->getValue('book_child_type')) ->save(); parent::submitForm($form, $form_state); } }