'textfield', '#title' => 'Autocomplete 1', '#autocomplete_route_name' => 'form_test.autocomplete_1', ]; $form['autocomplete_2'] = [ '#type' => 'textfield', '#title' => 'Autocomplete 2', '#autocomplete_route_name' => 'form_test.autocomplete_2', '#autocomplete_route_parameters' => ['param' => 'value'], ]; return $form; } /** * {@inheritdoc} */ public function submitForm(array &$form, FormStateInterface $form_state) { } }