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

core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestAjaxElementsForm.php, line 26

Class

AjaxFormsTestAjaxElementsForm

Builds a form where each Form API element triggers a simple Ajax callback.

Namespace

Drupal\ajax_forms_test\Form

Code

public function buildForm(array $form, FormStateInterface $form_state) {
  $callback_object = new Callbacks();
  $form['date'] = [
    '#type' => 'date',
    '#ajax' => [
      'callback' => [
        $callback_object,
        'dateCallback',
      ],
    ],
    '#suffix' => '<div id="ajax_date_value">No date yet selected</div>',
  ];
  $form['datetime'] = [
    '#type' => 'datetime',
    '#ajax' => [
      'callback' => [
        $callback_object,
        'datetimeCallback',
      ],
      'wrapper' => 'ajax_datetime_value',
    ],
  ];
  $form['datetime_result'] = [
    '#type' => 'markup',
    '#markup' => '<div id="ajax_datetime_value">No datetime selected.</div>',
  ];
  return $form;
}

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