/** * Overrides views_handler::options_form(). * * Provides link to shipment administration page. */ public function buildOptionsForm(&$form, FormStateInterface $form_state) { parent::options_form($form, $form_state); $form['link_to_shipment'] = array('#title' => t('Link this field to the shipment page'), '#description' => t('This will override any other link you have set.'), '#type' => 'checkbox', '#default_value' => !empty($this->options['link_to_shipment'])); }