function MultistepForm::buildForm

Overrides FormInterface::buildForm

File

modules/form_api_example/src/Form/MultistepForm.php, line 28

Class

MultistepForm

Provides a form with two steps.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    if ($form_state->has('page_num') && $form_state->get('page_num') == 2) {
        return $this->fapiExamplePageTwo($form, $form_state);
    }
    $form_state->set('page_num', 1);
    $form['description'] = [
        '#type' => 'item',
        '#title' => $this->t('A basic multistep form (page 1)'),
    ];
    $form['first_name'] = [
        '#type' => 'textfield',
        '#title' => $this->t('First Name'),
        '#description' => $this->t('Enter your first name.'),
        '#default_value' => $form_state->getValue('first_name', ''),
        '#required' => TRUE,
    ];
    $form['last_name'] = [
        '#type' => 'textfield',
        '#title' => $this->t('Last Name'),
        '#default_value' => $form_state->getValue('last_name', ''),
        '#description' => $this->t('Enter your last name.'),
    ];
    $form['birth_year'] = [
        '#type' => 'number',
        '#title' => $this->t('Birth Year'),
        '#default_value' => $form_state->getValue('birth_year', ''),
        '#description' => $this->t('Format is "YYYY" and value between 1900 and 2000'),
    ];
    // Group submit handlers in an actions element with a key of "actions" so
    // that it gets styled correctly, and so that other modules may add actions
    // to the form. This is not required, but is convention.
    $form['actions'] = [
        '#type' => 'actions',
    ];
    $form['actions']['next'] = [
        '#type' => 'submit',
        '#button_type' => 'primary',
        '#value' => $this->t('Next'),
        // Custom submission handler for page 1.
'#submit' => [
            '::fapiExampleMultistepFormNextSubmit',
        ],
        // Custom validation handler for page 1.
'#validate' => [
            '::fapiExampleMultistepFormNextValidate',
        ],
    ];
    return $form;
}