public function DefaultValueTestForm::buildForm in Address 8

Form constructor.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

array The form structure.

Overrides FormInterface::buildForm

File

tests/modules/address_test/src/Form/DefaultValueTestForm.php, line 25

Class

DefaultValueTestForm

Used to test the address default value handling inside complex ajax forms.

Namespace

Drupal\address_test\Form

Code

public function buildForm(array $form, FormStateInterface $form_state) {
  $wrapper_id = Html::getUniqueId('address-test-form-ajax-wrapper');
  $selected_payment_method = 'credit_card';
  $user_input = $form_state
    ->getUserInput();
  if (isset($user_input['payment_method'])) {
    $selected_payment_method = $user_input['payment_method'];
  }
  $form['#tree'] = TRUE;
  $form['#prefix'] = '<div id="' . $wrapper_id . '">';
  $form['#suffix'] = '</div>';
  $form['payment_method'] = [
    '#type' => 'radios',
    '#title' => $this
      ->t('Payment method'),
    '#options' => [
      'credit_card' => $this
        ->t('Credit card'),
      'cash_on_delivery' => $this
        ->t('Cash on delivery'),
    ],
    '#default_value' => $selected_payment_method,
    '#ajax' => [
      'callback' => [
        get_class($this),
        'ajaxRefresh',
      ],
      'wrapper' => $wrapper_id,
    ],
    '#required' => TRUE,
  ];
  $form[$selected_payment_method] = [
    '#type' => 'fieldset',
    '#title' => $this
      ->t('Billing information'),
  ];

  // The address being nested under $selected_payment_method means that
  // on #ajax there will be no matching address form input, cause the payment
  // method has changed. This should result in the default value being shown.
  $form[$selected_payment_method]['address'] = [
    '#type' => 'address',
    '#default_value' => [
      'country_code' => 'US',
      'administrative_area' => 'CA',
      'locality' => 'Mountain View',
      'postal_code' => '94043',
      'address_line1' => '1098 Alta Ave',
      'organization' => 'Google Inc.',
      'given_name' => 'John',
      'family_name' => 'Smith',
    ],
  ];
  $form['submit'] = [
    '#type' => 'submit',
    '#value' => $this
      ->t('Submit'),
  ];
  return $form;
}